Dissertations / Theses on the topic 'Dental extractions'
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Troulis, Maria J. "Dental extractions in patients receiving oral anticoagulant therapy." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ37316.pdf.
Full textCarson, Pauline. "Paediatric sedation and general anaesthetic services : choices for the future." Thesis, Queen's University Belfast, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268224.
Full textGoodwin, Michaela. "The use of general anaesthetic for dental extractions in children : researching the complex causal networks and approaches to reducing need." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/the-use-of-general-anaesthetic-for-dental-extractions-in-children-researching-the-complex-causal-networks-and-approaches-to-reducing-need(eb277cce-f90a-4ce5-b62c-91873a7d2959).html.
Full textNakamura, Alexandre Yudy. "Comparação dos resultados oclusais e da eficiência do tratamento das más oclusões de classe I e classe II completa com extrações de quatro pré-molares." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/25/25134/tde-06102008-113237/.
Full textThe objective of this retrospective study was to compare the occlusal outcomes and the treatment efficiency in the treatment of the Class I and Class II complete malocclusions, both treated with extraction of four premolars. The treatment efficiency was defined as the percentage of occlusal changes by the treatment time. The Group 1, composed by 75 patients who presented initially Class I malocclusion, presented initial mean age of 13.98 years (S.D.: 2.08, min.: 10.54 years and max.: 23.13 years), and the Group 2, composed by 32 patients who presented initially complete Class II, bilateral, presented initial mean age of 13.19 years (S.D.: 1.58, min.: 10.48 years and max.: 18.58 years). The occlusal evaluations were accomplished in study models of the patients in the initial and final phases using the indexes PAR and TPI. The occlusal indexes, the treatment time and efficiency of the groups were compared with the t test. The results demonstrated that the Group 1 achieved better occlusal outcomes and greater percentage of occlusal changes than the Group 2. However, there was no significant difference in the treatment time and efficiency in the treatment protocols between the groups considered.
Coelho, Joana Antunes Chambel. "Ensaio clínico sobre os benefícios analgésicos do canabidiol (CBD) em gatos com gengivoestomatite crónica submetidos a extração dentária." Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2022. http://hdl.handle.net/10400.5/24142.
Full textA gengivoestomatite crónica felina (GECF) é uma doença inflamatória oral altamente dolorosa e debilitante. O canabidiol (CBD) é o fitocanabinóide não psicoativo mais conhecido, com vários benefícios terapêuticos reconhecidos, nomeadamente no tratamento da dor crónica. Este estudo teve como objetivo avaliar a eficácia e segurança de um granulado à base de CBD, para administração oral, como adjuvante analgésico pós-operatório em gatos com GECF submetidos a extração dentária. Um ensaio clínico prospetivo cego, controlado por placebo, foi realizado num grupo de 18 gatos. Dez gatos receberam CBD (Anibidiol® 8 plus, Virbac) num intervalo de dose de 0,7 a 1,7 mg/kg a cada 12 horas e 8 gatos receberam um placebo, iniciado 2 horas antes do procedimento e que se prolongou durante 15 dias. Foram avaliados parâmetros fisiológicos e bioquímicos antes do procedimento e aos 15 dias. A avaliação clínica e a pontuação do índice de atividade da doença (SDAI) foram realizados 2 horas antes do procedimento e aos 15, 30, 60 e 90 dias após. A escala de dor oral composta (COPS-C/F) foi avaliada em 4 momentos no dia do procedimento e nas reavaliações seguintes. Qualquer reforço analgésico adicional ao protocolo peri operatório foi registado como resgate. A resposta ao tratamento foi avaliada aos 90 dias pós-cirúrgicos. Adicionalmente, foram recolhidas 5 amostras sanguíneas aos gatos medicados com CBD para avaliar o seu perfil farmacocinético. Foi possível concluir que o grupo de animais tratado com CBD beneficiou da sua administração, melhorando significativamente o nível de conforto, apetite e atividade, quantificados pelo inquérito ao tutor no SDAI (p=0,003) e na COPS-C/F (p<0,001). Adicionalmente, foi possível observar menos necessidade de recorrer a resgates analgésicos (p=0,040) e verificou-se uma tendência geral para melhor resposta ao tratamento com extrações dentárias. Não foram registados efeitos adversos graves durante todo o tempo de tratamento. O perfil de absorção registado para cada animal foi muito irregular, mas no geral inferior ao anteriormente reportado para formulações em óleo, variando entre 0,50 ± 0,00 e 34,81 ± 4,01 ng/ml na sua concentração máxima. Ao final de 12 horas os níveis séricos de CBD eram muito reduzidos. Este ensaio clínico sugere que o tratamento contínuo com CBD durante 15 dias duas vezes por dia pode aumentar o conforto pós-cirúrgico em animais com GECF.
ABSTRACT - Feline chronic gingivostomatitis (FCGS) is a highly painful and debilitating oral inflammatory disease. Cannabidiol (CBD) is the most well-known non-psychoactive phytocannabinoid, with several recognized therapeutic benefits, namely in the treatment of chronic pain. This study evaluated the efficacy and safety of a CBD-based powder for oral administration as a post operatory analgesic adjuvant in cats with FCGS submitted to dental extractions. A single blinded placebo-controlled study was conducted in a group of 18 cats. Ten cats received CBD (Anibidiol® 8 plus, Virbac) at a dose interval of 0,7 to 1,7 mg/kg every 12 hours and 8 cats received a placebo powder. CBD/placebo treatment began 2 hours before the procedure and lasted for 15 days. Physiological and biochemical parameters were collected pre-operatively and after 15 days. Clinical assessment and stomatitis disease activity index (SDAI) were performed 2 hours before and 15, 30, 60 and 90 days after surgery. Composite oral pain scale (COPS-C/F) was assessed at 4 moments on the day of the surgery and in the following reassessments. Additional analgesic reinforcement to the peri operatory protocol was registered as rescue. After 90 days, all animals were classified according to their post-surgical outcome. Additionally, 5 blood samples were collected from the cats medicated with CBD to evaluate the pharmacokinetic profile. It was possible to conclude that the group of animals treated with CBD benefited from its administration, improving significantly the level of comfort, appetite, and activity, as reported by the tutor inquiry in the SDAI (p=0,003) and COPS-C/F (p<0,001). Additionally, there were less analgesic rescues (p=0,040) and, in general, there was a tendency to a better response to surgical treatment. No severe adverse effects were registered throughout the treatment time. The absorption profile recorded for each animal was very irregular, but in general inferior to what has been previously reported for CBD oil formulations, ranging from 0,50 ± to 0,00 to 34,81 ± 4,01 ng/ml at its maximum concentration. At the end of 12 hours serum CBD levels were very low. This clinical trial suggests that CBD’s continuous treatment of 15 days twice a day can increase the post-surgical comfort in animals with FCGS. It was possible to conclude that the group of animals treated with CBD benefited from its administration, improving significantly the level of comfort, appetite, and activity, as reported by the tutor inquiry in the SDAI (p=0,003) and COPS-C/F (p<0,001). Additionally, there were less analgesic rescues (p=0,040) and, in general, there was a tendency to a better response to surgical treatment. No severe adverse effects were registered throughout the treatment time. The absorption profile recorded for each animal was very irregular, but in general inferior to what has been previously reported for CBD oil formulations, ranging from 0,50 ± to 0,00 to 34,81 ± 4,01 ng/ml at its maximum concentration. At the end of 12 hours serum CBD levels were very low. This clinical trial suggests that CBD’s continuous treatment of 15 days twice a day can increase the post-surgical comfort in animals with FCGS.
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Rosa, Rita Mourão. "O papel da alfa-1 glicoproteína ácida na monitorização clínica da gengivoestomatite crónica no gato : um estudo exploratório." Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2018. http://hdl.handle.net/10400.5/15894.
Full textA alfa-1 glicoproteína ácida (AGP) é uma proteína de fase aguda cuja concentração sérica se encontra elevada nas doenças sistémicas nos gatos. O objetivo do presente estudo consistiu em determinar os níveis de AGP numa amostra de animais com gengivoestomatite crónica (GECF), comparar os mesmos com um grupo saudável e verificar a sua evolução em dois momentos pós-cirúrgicos (dia 30 e dia 60). Foram selecionados 20 gatos: 10 controlos e 10 doentes, sem co-morbilidades diagnosticadas. Procedeu-se ao doseamento da AGP sérica com recurso a um kit AGP-8 de ensaio de imunoabsorção enzimática (ELISA). Todos os gatos do grupo doentes apresentam lesões clínicas graves de mucosite caudal e estomatite, alterações histológicas de inflamação máxima, bem como positividade para a presença de antigénio para o calicivírus felino reforçando a homogeneidade deste grupo. Foi observado um aumento significativo da concentração sérica de AGP nos gatos afetados, confirmando que existe inflamação com impacto sistémico. Observou-se ainda uma correlação positiva, estatisticamente significativa, entre os valores de AGP e a presença de mucosite caudal no dia 0, a presença de estomatite nos dias 30 e 60. Este estudo exploratório sugere que este biomarcador poderá ser útil como fator de mau prognóstico do tratamento cirúrgico.
ABSTRACT - THE ROLE OF ALPHA-1 ACID GLYCOPROTEIN IN CLINICAL MONITORING OF CHRONIC GINGIVOSTOMATITIS IN CAT: AN EXPLORATORY STUDY - Alpha-1 acid glycoprotein (AGP) is an acute phase protein found to be high in systemic diseased cat’s. The objective of the present study was to determine AGP seric levels in a sample of animals with chronic gingivostomatitis (FCGS), compare those with a healthy group and evaluate their levels in 2 post-operative moments (30 and 60 days). Twenty cats were selected: 10 controls and 10 diseased, without diagnosed co-morbilities. Serum AGP was determined using an AGP-8 enzyme linked immunosorbent assay (ELISA) kit. In this study all diseased cats presented severe clinical lesions of caudal mucositis and bucostomatitis, histological findings of maximal inflammation, and positive isolation feline calicivirus (FCV) antigen, reinforcing the homogeneity of the group. The serum concentration of AGP is significantly increased in the FCGS group, confirming that these cats are in a systemic inflammatory state. A positive statistically significant association was found between AGP values and the presence of caudal mucositis and stomatitis lesions, in the pre-operative and post operative moment. This exploratory study suggests that this biomarker may be useful as poor prognostic fator of surgical treatment.
CIISA
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Simplício, Hallissa [UNESP]. "Avaliação da reabsorção radicular apical em incisivos submetidos à retração anterior." Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/95821.
Full textFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
A reabsorção radicular apical é um dos mais comuns e indesejáveis efeitos colaterais do tratamento ortodôntico sendo motivo de estudos com finalidade de seu entendimento e elaboração de medidas preventivas. Objetivou-se com o presente estudo determinar e quantificar radiograficamente a ocorrência de reabsorção radicular nos incisivos após a retração anterior, levando-se em consideração o dente estudado e sua relação com a quantidade de movimentação radicular ou modificação na inclinação do incisivo. Foram avaliados incisivos superiores e inferiores de 22 pacientes entre 12 e 25 anos, de ambos os gêneros, submetidos a tratamento ortodôntico com aparelho fixo e extração de pré-molares. A quantificação da reaborção radicular foi realizada pela diferença entre as medidas do comprimento radicular em radiografias periapicais nas fases pré e pós retração de incisivos.O controle da distorção da imagem radiográfica e da alteração na angulação dos incisivos foi realizada utilizando-se o método descrito por Linge & Linge (1983). Foram utilizadas telerradiografias laterais pré e pós retração de incisivos para relacionar a mudança de inclinação dos incisivos e quantidade de movimento vertical, horizontal e total do ápice radicular com a reabsorção radicular. Com base nos dados obtidos conclui-se que há reabsorção radicular significante na fase de retração de incisivos variando de 1,51 mm a 2,37 mm não relacionada com o movimento ou alteração de inclinação do ápice radicular destes dentes através do osso.
Apical root resorption is among the most commom and undesirable counterside effects of orthodontic treatment. Thus it has been extensively studied in order to be prevented or minimized. The present research aimed to radiographically determine and quantify root resorption on incisors after retraction of the anterior segment. The root resoption and it's relation to the root movement or incisors tipping were considered. Upper and lower incisors of 12 to 25 years old patients, both gender, orthodontically treated with fixed appliance and premolars extraction were evaluated in the present study. The measurement of root resorption was obtained by the differences between root length on periapical radiographs, before and after incisors retraction. Distortion of the radiographic image and incisors tipping change control were controled using the methodology proposed by Linge & Linge (1983). Pre and post incisor retraction lateral cephalometric radiographs were used to establish the relation between root resorption and the tipping of the incisors and vertical, horizontal and total movement of the root apex. Based on the obtained data it was concluded that there is significant root resorption during incisors retraction movement, varing from 1.51 mm to 2.37 mm, and it is not related to the movement of root apex or to the tipping change of these teeth through the bone.
Camargo, Luiz Otavio Alves. "\"Análise prospectiva da estabilidade dos tecidos moles ao redor de implantes imediatos com restaurações imediatas em incisivos centrais superiores\"." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/23/23137/tde-17052007-153752/.
Full textThe immediate implants that receive immediate restorations have been presented in literature as a reliable alternative to the replacement of condemned teeth. Recently, however, doubts regarding the perimplantar tissue stability have been raised. In this prospective study, twelve patients had their central maxillary incisor replaced by immediate implant and immediate restoration. After 18 months the papillae height and the Zenith of implant supported crown were compared to the dimensions before dental extraction. No statistically significant difference was observed between the obtained measurements. The authors justify the obtained results to the rigorous selection criteria of the cases that had been part of this sample and the surgical technique applied. In the selections criteria and executions followed in this work to the immediate implant placement and immediate restorations, we can state that the soft perimplantar tissues have been remained stable for the 18 months? observation.
Lau, Ka-yee, Lui Pun, 劉嘉儀, and 潘磊. "A systematic review on survival and success rates of implants placed immediately into fresh extraction sockets after at least one year." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46960569.
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Dental Surgery
Master
Master of Dental Surgery
Salas, Mabel L. "Alveolar Ridge Preservation at different anatomical locations – Clinical and Histological evaluation of treatment outcome." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1259787215.
Full textJabbar, Nadia Salem Abdel. "Fatores associados à necessidade de exodontia de incisivos centrais superiores decíduos traumatizados." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/23/23132/tde-11092012-124728/.
Full textThe purpose of this historical cohort study was to evaluate factors associated with the necessity of extraction of traumatized deciduous central incisors. Data were collected by a single examiner by taking photographs, radiographs and present information in the medical records of 1734 patients seen at the Research and Clinical Center of Dental Trauma in Primary Teeth of the School of Dentistry of the University of São Paulo, from 1998 to 2009. The criterion for inclusion in the study of medical records was the presence of photographs and / or X-rays showing the presence of central incisors erupted or in eruption process, where the deciduous central incisors already are no longer present in the oral cavity. It was evaluated records of 521 patients and 988 traumatized deciduous maxillary central incisors. The experimental unit for the study was the tooth. Three outcomes were analyzed: extraction as a result of the trauma in itself, extraction as a result of signs of infection, and extraction after prolonged retention. All the outcomes were compared to upper deciduous central incisors that had physiological exfoliation. The independent or explanatory variables were divided into groups: related to the patient, to the trauma, and to the tooth. Data were tabulated and analyzed using Poisson regression to assess the relationship between the variables. Having suffered a trauma with displacement (RR=4,73; 2,06 10,98), intrusive (RR=4,18; 1,74 10,07) or extrusive (RR=9,57; 4,22 21,67), with pulp involvement (RR=17,89; 8,02 39,88) or root fracture (RR=2,74; 1,06 7,07), in addition to trauma with more than two teeth affected (RR=1,33; 1,12 1,57), were positively associated to the risk of tooth extraction as a result of trauma. For the loss by infection, the element having suffered trauma (RR= 1,75; 1,05 2,93) and developing high-severity pulp necrosis (RR=25,86; 13,4 49,6) were positively associated with risk of tooth extraction. On the other hand, having undergone endodontic treatment (RR=0,50; 0,34 0,74) and restoration (RR=0,33; 0,11 0,99) factors were negatively associated with the same outcome. Having undergone endodontic treatment (RR=3,04; 1,97 4,69) was positively associated with the necessity of extraction after prolonged retention, whereas a lateral or extrusive displacement (RR=0,27; 0,74 0,96) and presenting an increased pericementary space (RR=0,45; 0,21 0,95) was negatively associated with the same outcome. It is concluded that lateral displacement, intrusive and extrusive, fractures with pulp involvement, root fracture and having more than 2 teeth involved increase the possibility of extraction as a result of the trauma by itself. Moreover, loss by infection is associated with severe traumas and the development of pulp necrosis, whereas undergoing conservative treatments, such as endodontic treatment and restoration may avoid early extraction of the deciduous tooth, and endodontic treatment increases the possibility of extraction by prolonged retention.
Alves, Pereira Daniela. "Factores que influyen en la decisión de extraer terceros molares inferiores asintomáticos. Un estudio en odontólogos de España y Portugal." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/461939.
Full textReports in the scientific literature indicate that around 18% to 40% of 3Ms are extracted without any pathological sign. The decision is based on the need to minimise the future risk of tooth pathology and to reduce age-related surgical morbidity. Although some publications compare extraction indications between clinicians, there is very little information about the factors (related either to the patient or the dentist) that influence the decision to extract an asymptomatic 3M. The objectives of the present study were to look into the indications for extracting asymptomatic lower 3Ms and to link such indications to the clinical and radiological properties of the 3M and to the clinicians' training and professional experience. A survey consisting of 15 cases of asymptomatic lower third molars was emailed to Portuguese and Spanish dentists. The clinicians were asked to assess the level of difficulty of the extractions and to make a reasoned recommendation based on the panoramic radiographs, gender and age of the patients. The results were analysed using IBM SPSS® 22.0 software (IBM Corp., New York, USA). A total of 381 clinicians filled in the questionnaires. Most of the professionals had over 13 years of clinical experience. The number of Spanish clinicians with postgraduate degrees in Oral Surgery was significantly higher. On average, 42% of respondents recommended extraction of asymptomatic third molars. The indication for extraction was significantly higher among Portuguese dentists. The estimated difficulty of 3M surgery was negatively correlated with experience: the most recent graduates rated the cases as more difficult. 2M caries and prevention of pericoronaritis were the main reason given for the extraction in patients older than 26 years, 3M partially erupted and with limited mesio-distal space to erupt, whereas that for not extracting was the absence of a clear indication and the risk of injuring the inferior alveolar nerve.
Cambiaghi, Lucas. "Avaliação comparativa dimensional longitudinal do rebordo alveolar pós exodontia, com modalidades cirúrgicas distintas: convencional x com dispositivo minimamente traumático." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/25/25146/tde-26042016-103809/.
Full textIntroduction: After dental extraction, the natural repair process of the alveoli occurs a undesirable remodel in alveolar ridge, with dimensional changes that result in the reduction of same. This post-surgical sequel is characterized by resorption of the alveolar process and brings complications for an aesthetic and functional rehabilitation, as the alveolar ridge gets their morphology and volume changed. Objectives: The objective of this study was to verify whether a device of minimally traumatic extraction has the potential to minimize this sequel which occurs after tooth extraction, compared to the conventional surgical technique. Material and methods: 12 patients were randomly divided into 2 groups according to the surgical approach they would receive. In the control group the dental extraction was made with conventional technique and instruments, as levers and extractors, and in the experimental group with Neodent ® Dental Extractor. Both groups had the spontaneous healing of the alveoli monitored by 6 months, with measures of clinical and radiographic bone height, gingival height and thickness, parsed through the scanning of plaster models, in addition to the evaluation of surgical clinical time and postoperative pain. Results: The results showed that after 6 months of repair, both groups showed a decrease of the original measures, namely, dimensional variation. Although the experimental group performed superior in almost all analysed aspects, there was no statistically significant difference, except in the height of gingival distal area. Conclusions: The use of Neodent ® Dental Extractor seems to be able to help in the preservation of the alveolar ridge dimensions post tooth extraction.
Gordon, Ross. "Criteria to Maintain Periodontally-involved Teeth versus Extract and Replace with Implants: A Delphi Study." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1502792951637218.
Full textAmorim, José Benedito Oliveira. "Efeitos da Isradipina (LOMIR). Agente inibidor de canais de cálcio, no processo de reparo em feridas de extração dental : estudo histológico em ratos /." São José dos Campos, 1995. http://hdl.handle.net/11449/113960.
Full textBanca: Divo Leonardo Sanioto
Banca: Franklin Edgard de Moura Campos
Resumo: Com a finalidade de analisar os efeitos da Isradipina, recente bloqueador dos canais de cálcio lançado no mercado, no processo de reparo em feridas de extração dental, foram utilizados 48 ratos albinos. Estes animais foram divididos em dois grupos. Os animais do grupo I serviram de controle e, os do grupo II, em seguida à extração dental receberam, por via intraperiotonial, 2, 5 mg/Kg de isradipina (Lomir /Sandoz Pharma) em dose única. De cada grupo, foram sacrificados 4 animais, após 3, 7, 14 e 21 dias pós-operatórios. Os espécimes obtidos foram fixados, descalcificados e incluídos em parafina. Os cortes foram corados pela hematoxilina e eosina para o estudo morfológico. Com base nos resultados obtidos, concluímos que a isradipina, não afetou a cronologia nem a qualidade do processo de reparo alveolar em feridas de extração dental, em ratos
Abstract: In order to make a histological evaluation of the dental alveolus wound healing in presence of the Isradipine (Lomir/Sandoz Pharma), the new calcium channels blockers, forthy-eight albino rats were utilized. These animals were divided in two groups. The animals of group I were considered as control; in group II, after the dental extractions the rats received intraperitonial injections of 2,5 mg/Kg of isradipine, administered a single dose. From each group of animals were sacrificed at 3, 7, 14 and 21 post-operative days. The pieces were fixed, descalcified and embedded in paraffin. The blocks thus obtained were cut at 6 micrometers thick and sections were stained with hematoxylin and eosin for morphological study. According to the results obtained i t was verified that the treated animals did not alter of wound healing after dental extractions
Mestre
Adrian, Benjamin [Verfasser], Andreas [Akademischer Betreuer] Dengel, and Philipp [Akademischer Betreuer] Cimiano. "Information Extraction on the Semantic Web : utilizing the resource description framework in information extraction / Benjamin Adrian. Betreuer: Andreas Dengel ; Philipp Cimiano." Kaiserslautern : Technische Universität Kaiserslautern, 2012. http://d-nb.info/1027515657/34.
Full textNeergaard-Richardt, Tobias, and Teemu Väkiparta. "Immediate Loaded Implants Placed in Fresh Extraction Sockets - Effect on Marginal Bone." Thesis, Umeå universitet, Institutionen för odontologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-142304.
Full textAmorim, José Benedito Oliveira [UNESP]. "Efeitos da Isradipina (LOMIR). Agente inibidor de canais de cálcio, no processo de reparo em feridas de extração dental: estudo histológico em ratos." Universidade Estadual Paulista (UNESP), 1995. http://hdl.handle.net/11449/113960.
Full textCom a finalidade de analisar os efeitos da Isradipina, recente bloqueador dos canais de cálcio lançado no mercado, no processo de reparo em feridas de extração dental, foram utilizados 48 ratos albinos. Estes animais foram divididos em dois grupos. Os animais do grupo I serviram de controle e, os do grupo II, em seguida à extração dental receberam, por via intraperiotonial, 2, 5 mg/Kg de isradipina (Lomir /Sandoz Pharma) em dose única. De cada grupo, foram sacrificados 4 animais, após 3, 7, 14 e 21 dias pós-operatórios. Os espécimes obtidos foram fixados, descalcificados e incluídos em parafina. Os cortes foram corados pela hematoxilina e eosina para o estudo morfológico. Com base nos resultados obtidos, concluímos que a isradipina, não afetou a cronologia nem a qualidade do processo de reparo alveolar em feridas de extração dental, em ratos
In order to make a histological evaluation of the dental alveolus wound healing in presence of the Isradipine (Lomir/Sandoz Pharma), the new calcium channels blockers, forthy-eight albino rats were utilized. These animals were divided in two groups. The animals of group I were considered as control; in group II, after the dental extractions the rats received intraperitonial injections of 2,5 mg/Kg of isradipine, administered a single dose. From each group of animals were sacrificed at 3, 7, 14 and 21 post-operative days. The pieces were fixed, descalcified and embedded in paraffin. The blocks thus obtained were cut at 6 micrometers thick and sections were stained with hematoxylin and eosin for morphological study. According to the results obtained i t was verified that the treated animals did not alter of wound healing after dental extractions
Coimbra, Ana Maria Forjaz Morão Dias. "A go-to-market strategy for green extration and impregnation." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/8302.
Full textConrado, Valéria Cristina Leão de Souza. "Efeitos Cardiovasculares da anestesia local com vasoconstritor durante exodontia convencional em coronariopatas." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/6/6135/tde-23092011-134918/.
Full textBackground: Patients with coronary artery disease, needing odontological treatment under local anesthesia with vasoconstrictor agents, comprised a special group to manage because of multiple aspects. In this situation, cardiovascular disease can be presented with serious complications, such as: arrhythmias, unstable angina and even acute myocardial infarction. The dental practioner facing these controversies must know the anesthesical solutions, drug interactions and possible cardiovascular repercussions. Objectives: To evaluate the occurrence of myocardial ischemic parameters during or after the odontological treatment such as: 1) ST-segment changes evaluated by Holter system, left ventricular hypocontractility by Doppler-echocardiography and serium biomarkers elevation; 2) angina pectoris, arrhythmias and mitral insufficiency. Methods: The coronary patients were submitted to dental extractions under local anesthesia with or without vasoconstrictor and were divided into two groups according to randomization. All patients were monitor with Holter throughout 24 hours; Doppler-echocardiograms were done before and after odontological interventions and the biochemical markers were measured before and 24 hours after the dental extractions (CKMB mass, CKMB activity and Troponin T). Besides that, cardiac rate and blood pressure were also measured pre and post-anesthesia and post-dental extractions. The Doppler-echocardiograms were done to evaluate the left ventricular contractility and possible mitral insufficiency. Results: Between May 2004 and May 2005, fifty-four patients with coronary artery disease and with indication for dental extraction were included in this study. Patients were equally divided into two groups: 27 patients treated with local anesthesia with vasoconstrictor (group I) and 27 patients without vasoconstrictor (group II). The mean age of group I was 58 years old (SD 7.98) and of group 2 was 55 years old (SD 8.57); male gender was 59.3 per cent in group I and 66.7 per cent in group II; 66.6 per cent had previous myocardial infarction with or without ST elevation in group I and 77.7 per cent in group II. In group I the mean dental extraction was 1.6 teeth per patient (SD 0.96) and 1.8 teeth per patient (SD 1.21) in group II. The mean number of anesthesic tubes per patient were 1.5 tubes (SD 0.87) and 1.8 tubes (SD 0.79) for groups I and II, respectively. Three patients from group I had ST-segment depression (1.0 mm) during the anesthesia application, and in none of these patients were observed any other ischemic method. Two other patients from group I had CKMB mass elevation. In none of the patients was observed left ventricular hypocontractility, angina pectoris, arrhythmias or mitral insufficiency. Conclusions: The dental extraction performed under the use of anesthesia with epinephrine 1:100,000 do not cause additional ischemical risks, since it is done with good anesthesical technique and maintenance of the pharmacological treatment prescribed by the cardiologist
Raimundo, Mariana Peres Navarro. "Ensaio clínico para avaliação do benefício da administração peri-operatória de paracetamol em cães submetidos a extração dentária." Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2019. http://hdl.handle.net/10400.5/19210.
Full textO paracetamol é um analgésico, antipirético e fraco anti-inflamatório, amplamente utilizado em Medicina Humana e que pode ser utilizado no maneio da dor peri-operatória no cão. Apesar de apresentar uma janela terapêutica reduzida, o seu uso tem aumentado por ter efeitos adversos gastrointestinais e renais negligenciaveis e não possuir efeito antiagregante plaquetário. A hepatotoxicidade ocorre, no entanto, em casos de sobredosagem, o que pode acontecer com alguma facilidade no contexto de uso sem recomendação médico-veterinária. O objetivo desta dissertação consistiu em avaliar a eficácia analgésica do paracetamol em cães submetidos a extração dentária. Para tal, foi realizado um estudo clínico prospetivo, aleatório e cego, no contexto de procedimentos de extração dentária. Os animais foram divididos em dois grupos, de acordo com a administração ou não de paracetamol. As variáveis recolhidas foram os parâmetros de monitorização anestésica, as pontuações de dor obtidas através da escala de dor de Melbourne às 0 horas, 2 horas e 4 horas e uma escala de dor numérica de 0 a 10 após 24 horas. Não foram observadas diferenças estatisticamente significativas entre os níveis de dor às 0 e às 2 horas (p=0.783) nem entre as escalas de dor às 2 e às 4 horas (p=0.254), para todos os animais. Quanto à diferença de escalas de dor entre o grupo de controlo e o grupo do paracetamol, não se observaram diferenças estatisticamente significativas em nenhum dos momentos estudados: às 0 horas (p=0.199), 2 horas (p=0.813), 4 horas (p=0.193), e 24 horas (p=0.745). Nenhum dos animais necessitou de resgate analgésico. Observaram-se diferenças estatisticamente significativas entre os dois grupos para a frequência cardíaca máxima (p=0.036) e a pressão diastólica mínima (p=0.021), no período intra-operatório. Observou-se ainda efeito de interação (p=0.017) entre as variáveis Grupo e Tempo, verificando-se um decréscimo da dor média no grupo do paracetamol, de 4.2 às 0 horas para 2.4 às 4 horas. No grupo controlo observou-se um aumento do nível médio de dor de 2.4 às 0 horas para 3.8 às 4 horas. Não foi possível concluir acerca do benefício analgésico do paracetamol integrado no maneio da dor perioperatória em cães submetidos a extração dentária, devido ao erro de tipo 2 associado à amostra pequena. No entanto, o decréscimo da dor no grupo do paracetamol sugere que este fármaco poderá ser útil como adjuvante analgésico em cães submetidos a extrações dentárias.
ABSTRACT - Clinical trial to evaluate the benefit of perioperative administration of paracetamol to dogs undergoing dental extraction - Paracetamol is an analgesic, antipyretic and weak anti-inflammatory, commonly used in human medicine and it may be used to manage perioperative pain in dogs. It has a small therapeutic window, but its use has been increasing since it has negligible gastrointestinal and renal adverse effects and it doesn’t have platelet anti-aggregation effect. Hepatotoxicity is possible in cases of overdose, especially used without veterinary prescription. The main goal of this dissertation is to evaluate the analgesic efficiency of paracetamol in dogs submitted to dental extraction. We realized a prospective, random and blind clinical trial, in the context of dental extractions. The animals were divided in two groups, according to the administration or not of paracetamol. The variables collected were: anesthesia parameters, pain scores obtained from Melbourne pain scale at 0 hours, 2 hours and 4 hours and one numeric pain scale between 0 and 10 after 24 hours. The results obtained showed no significant statistical difference between the levels of pain at 0 and 2 hours (p=0.783) and the scales between 2 and 4 hours (p=0.254), for all animals. As to the difference of the pain’s level between control group and paracetamol group, there were no significant statistical difference at any of the studied moments: 0 hours (p=0.199), 2 hours (p=0.813), 4 hours (p=0.193) and 24 hours (p=0.745). None of the animals needed analgesic rescue. There was significant statistical difference between groups on the maximum heart rate (p=0.036) and minimum diastolic pressure (p=0.021), during the surgery. There was as well an interaction effect (p=0.017) between Group and Time. There was a decrease from 4.2 (0 hours) to 2.4 (4 hours) of the average pain level in the paracetamol group. In the control group there was an increase of the average pain level, from 2.4 (0 hours) to 3.8 (4 hours). It was not possible to conclude if the paracetamol has analgesic benefits on pain control of dogs submitted to dental extraction, because of the small population. But the decrease of the pain’s level in the paracetamol group shows that is possible that the paracetamol is useful as an adjuvant on pain control to dogs submitted to dental extraction.
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Almeida, Júnior Paulo [UNESP]. "Influência de três hemostáticos tópicos no processo de reparo em feridas de extração dental: análise histológica e histométrica em ratos." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/88932.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A hemorragia após extração dental constitui-se em uma das complicações mais freqüentes na prática da cirurgia oral. Devido à dificuldade para se exercer manobras como pinçamentos e ligaduras de vasos neste tipo de hemorragias, existe a possibilidade do preenchimento do alvéolo com materiais hemostáticos de ação tópica. O propósito deste estudo foi analisar a influência de três hemostáticos tópicos (Hemostop®, Pro Tape® e ViscoStat®) na cronologia do processo de reparo em feridas de extração dental por meio de uma análise histológica e histométrica. Para tanto foram utilizados 60 ratos (Wistar) machos divididos em quatro grupos de 15 animais cada. Todos os animais foram submetidos à extração do incisivo central superior direito, seguido ou não da colocação de agente hemostático entre o terço médio e apical do alvéolo dental, e posterior sutura com fio reabsorvível. Em grupos de cinco, os animais foram sacrificados aos 7, 14 e 28 dias pós-operatórios por inalação excessiva de éter sulfúrico. Suas maxilas foram separadas, fixadas em formalina, descalcificadas em EDTA e incluídas em parafina. Foram realizados cortes de 6 æm de espessura e corados com Hematoxilina e Eosina, e Tricrômio de Masson. Após a análise histológica, em microscópio óptico; e histometria óssea, com o software ImageLab, os resultados foram submetidos ao teste não-paramétrico de Kruskal-Wallis. Pela metodologia aplicada foi possível concluir que: 1) houve atraso na cronologia do processo de reparo alveolar em todos os grupos tratados; 2) os materiais analisados provocaram intensa reação inflamatória no tecido adjacente; 3) em todos os períodos estudados (7, 14 e 28 dias), a análise histométrica revelou maior neoformação óssea nos animais do grupo 1 (controle). No entanto, a análise estatística constatou diferença significante (p<0,05) somente no 70 dia,...
The hemorrhage after dental extraction is one of the most frequent complications in practice of the oral surgery. Due to the difficulty to exercise maneuvers as arrestty and ligature of blood vessel in this type of hemorrhages, exists the possibility of the filling of the alveolus with hemostatics materials of topical action. The purpose of this study was to analyze the influence of three topical hemostatics (Hemostop®, Pro Tape® and ViscoStat®) in the chronology of the repair process in wounds of dental extraction through a histologic and histometric analysis. For such, 60 male's rats (Wistar) were used divided in four groups of 15 animals each. All the animals were submitted to the extraction of the right superior central incisor, followed or not of the placement of hemostatics agent among the medium and apical third of the dental alveolus, and subsequent suture with reabsorble filament. In groups of five, the animals were sacrificed to the 7, 14 and 28 postoperative days by excessive inhalation of sulfuric ether. Your maxillaries were separate, fixed in formalin solution, decalcified in EDTA and included in paraffin. Cuts of 6 æm of thickness were accomplished and stained with hematoxylin and eosin, and Masson's trichromic. After the histologic analysis, in optical microscope; and histometric bony, with the software ImageLab, the results were submitted to the no-parametric test of Kruskal-Wallis. For the applied methodology it was possible conclude that: 1) there was delay in the chronology of the alveolar repair process in all the treated groups; 2) the analyzed materials instigated a intense inflammatory reaction in the adjacent tissue; 3) in all the studied periods (7, 14 and 28 days), the histometric analysis revealed larger bony neoformation in the animals of the group 1 (control group)...(Complete abstract click electronic access below)
Melo, Alexandre de. "Estudo da reparação do alvéolo dental de ratos wistar preenchido com osso autógeno particulado após exodontia." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/42/42131/tde-03012008-151813/.
Full textAfter tooth extraction a continuous bone resorption of the alveolar process is observed in the maxilla and in the mandible. The unfavorable anatomy of the reabsorbed bone ridge limits the rehabilitation of the edentulous area with prostheses over dental implants. Filling the dental alveolus after the exodontia with bone grafts and/or biomaterials is a procedure that tries to delay the physiologic resorption of the alveolar process and stimulates bone formation. The aim of this study is to investigate the influence of the particulated autogenous bone graft in the alveolar socket healing following tooth extraction in Rattus Norvegicus Albinus lineage Wistar. Sixty-seven male rats were used, each weighing 190 to 250 g. The animals were divided in a control and an experimental group. The upper right incisor was extracted in the rats of both groups. Following the tooth extraction, in the animals of the experimental group, the socket was grafted with particulated autogenous bone. The bone graft was obtained from the iliac bone of the same grafted animal. At 7, 14 and 21 days of postoperative, some rats received subcutaneous applications of the ossification marker calcein dissolved in a sodium bicarbonate 2% solution. The euthanasia of the animals was accomplished in the 5th, 15th, 21st and 28th days of postoperative. After the euthanasia the bone parts that contain the dental socket of each right maxilla were removed and reduced to small samples. All the samples were then fixed and processed for histological analysis. The total area of bone was quantified in the socket by a differential point-counting method and by use of an image analyzing program. The data were analyzed statistically and showed that there was a progressive increase of the bone total area during the postoperative periods. However, the morphometric analysis of the total area of bone in the control and experimental groups, did not show a significant statistical difference in none of the postoperative periods. The results reveal that the autogenous bone graft did not promote a significant increase of the bone new formation in the dental socket following tooth extraction.
PerdigÃo, JoÃo Paulo Veloso. "Postoperative bleeding after tooth extraction in the pretransplant liver failure patient." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5999.
Full textO transplante hepÃtico à o tratamento padrÃo para pacientes com cirrose hepÃtica e carcinoma hepatocelular. Dados do Registro Brasileiro de Transplantes (RBT) demonstraram que o transplante hepÃtico foi o segundo ÃrgÃo sÃlido mais transplantado em 2010. Para eliminar focos de infecÃÃo e reduzir o risco infeccioso na fase pÃs-transplante, esses pacientes devem passar por uma avaliaÃÃo odontolÃgica minuciosa para remoÃÃo dos focos de origem dental. No caso de procedimentos odontolÃgicos que gerem sangramento, o cirurgiÃo-dentista deve dar atenÃÃo especial para a hemostasia, devido, principalmente, à reduÃÃo da sÃntese hepÃtica de fatores da coagulaÃÃo e trombocitopenia. O objetivo deste estudo prospectivo foi avaliar a incidÃncia de hemorragia pÃs-operatÃria de exodontias em pacientes na fila de espera por um transplante de fÃgado. Nesse estudo foram incluÃdos 23 pacientes com idade mÃdia de 43,17  14,62 anos com predominÃncia da raÃa branca (82,6%) e do sexo masculino (60,9%). Nos 23 pacientes, 84 exodontias simples foram realizadas em 35 procedimentos cirÃrgicos. Os pacientes foram divididos em dois grupos para comparaÃÃo de duas medidas hemostÃticas locais apÃs as exodontias: no grupo 1, aplicou-se pressÃo local com gaze embebida em Ãcido tranexÃmico, e no grupo 2, realizou-se a mesma conduta sem o uso do referido Ãcido. Em todos os pacientes foram utilizadas a esponja de colÃgeno reabsorvÃvel e sutura em X como medida hemostÃtica padrÃo. Os valores encontrados para os exames hematolÃgicos foram: hematÃcrito mÃdio de 34,54  5,84% (intervalo de 21,7% â 44,4%), plaquetometria variou de 31.000/mm3 a 160.000/mm3 e o Ãndice mÃdio encontrado para a razÃo internacional normatizada (INR) foi 1,50  0,39 (intervalo de 0,98 â 2,59). Sangramento pÃs-operatÃrio ocorreu apenas em um procedimento (2,9%) e a pressÃo local com gaze foi eficaz em parar o episÃdio de hemorragia. Dessa forma, esse trabalho demonstra a possibilidade da realizaÃÃo de exodontias em pacientes com cirrose hepÃtica com valores de INR ≤ 2,50 e plaquetometria ≥ 30.000/mm3 sem a necessidade de transfusÃo sanguÃnea e que diante da ocorrÃncia de intercorrÃncias hemorrÃgicas, o uso de medidas hemostÃticas locais pode ser satisfatÃrio.
Page, Kelly R. "A reevaluation of mandibular intercanine dimension and incisal position." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2009r/page.pdf.
Full textSOUSA, FILHO Gilberto Cunha de. "Efeito da utilização do biopolímero da cana-de-açúcar na regeneração alveolar de incisivos de coelhos." Universidade Federal de Pernambuco, 2014. https://repositorio.ufpe.br/handle/123456789/16246.
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O biopolímero da cana-de-açúcar é um produto extraído da síntese bacteriana através da Zoogloea sp., a partir do melaço de cana-de-açúcar, que apresenta características cicatrizantes em feridas cutâneas, porém nada tem sido descrito na reparação alveolar pós-cirúrgica em procedimentos que envolvem exodontias. Este trabalho se propõe a avaliar a ação deste biopolímero individualmente e associado à hidroxiapatita na reparação óssea alveolar por meio da determinação da radiopacidade e pela análise histomorfométrica, descrevendo um protocolo cirúrgico para exodontias em coelhos. Para tal, foram utilizados 30 coelhos da raça Nova Zelândia distribuídos em três grupos : Grupo I (n=10) tratado com biopolímero da cana-de-açúcar após exodontia; Grupo II (n=10) tratado com biopolímero da cana-de-açúcar associado à hidroxiapatita após a exodontia e Grupo III (n=10), grupo controle, com realização de exodontia e sem tratamento. O período de avaliação foi de 60 dias após a cirurgia, sendo realizado análise da radiopacidade feita através de radiografias digitais e estudo histomorfométrico da espessura das tábuas ósseas superior, inferior e da região central do alvéolo .As análises da radiopacidade e histomorfométrica não demonstraram diferenças significativas entre os grupos.Pôde-se ver que o uso da técnica proposta foi favorável em todos os procedimentos cirúrgicos, devido à metodologia desde a execução das manobras cirúrgicas à inserção de substâncias, sem causar alterações nos tecidos, que poderiam promover alterações no período de cicatrização. O biopolímero da cana-de-açúcar mostrou-se biocompatível, porém, não promoveu fechamento total da loja cirúrgica, onde o trabeculado ósseo circunscreveu os limites da esponja, não ocorrendo ossificação no seu interior. Porém, constatou-se que havia formação inicial de espículas ósseas no interior da esponja quando impregnada com hidroxiapatita. Assim, este biopolímero não impede a reparação óssea, porém a ação como veículo na reparação ocorre somente quando associado a outros materiais osteocondutores.
The biopolymer of cane sugar is a product extracted from bacterial synthesis by Zoogloea sp., however nothing has been described in alveolar post-surgical procedures that involved dental extractions. This study aims to evaluate the action of this biopolymer taken individually and in combination with hydroxyapatite on alveolar bone repair by determination of radiopacity and by histomorphometric analysis, describing a surgical protocol of dental extractions in rabbits. In this research were used 30 rabbits (Oryctolagus cuniculus) of New Zealand race, with an average weight of 3.0 kg, distributed in three experimental groups, i.e. Group I (n = 10) with the lower right incisor dental extraction and treated with biopolymer of cane sugar, Group II (n = 10) with the lower right incisor dental extraction and treated with biopolymer of cane sugar, associated with hydroxyapatite and Group III (n = 10), the control group, with the lower right incisor dental extraction with just achievement of suture. The trial period was 60 days after surgery, with the analysis of radiopacity made using digital x-rays and histomorphometric study of the thickness of the bone plates of upper, lower and central alveolus region, using the average value of the pixels in the images. The removal of the rabbit's incisor tooth required special care, because it was bent on the entire length of its alveolus, therefore, it was necessary for the extraction to be done in an upward curvilinear movement during the seizure of the dental crown by forceps, allowing the tooth to be avulsed without complications of fracture at its root, with use of forceps and elevators adapted for this purpose. In the analysis of the radiographic data the average values of the pixel of 128.8, 128.1 and 124.0 for Groups I, II and III respectively were observed, and no significant differences between the same were displayed. Histomorphometric bone formation showed no statistically significant difference between the groups, with the highest average in Group III, and the lowest in Group I. It could be seen that the use of the technique proposed was favourable in all surgical procedures, due to methodology since the implementation of the surgical insertion maneuvers in insertion of substances, without causing changes in tissues, which could promote changes in the healing period. The biopolymer from cane sugar has proven biocompatible, however, it did not promote total closure of surgical cavity, where the trabecular bone circumscribed the limits of sponge, with no ossification occurring therein. However, it was noted that there was initial formation of bone spicules within the sponge when impregnated with hydroxyapatite. Therefore, this biopolymer does not prevent the bone repair, however it acts as a repair vehicle only when combined with other osteoconductive materials.
Sturgill, Riley B. "Prevalence and Clinical Characteristics of Teeth Extracted with a Diagnosis of Cracked Tooth: A Retrospective Study." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4820.
Full textAn, Tien Li [UNESP]. "Efeitos da retração dentária sobre o ponto A em pacientes submetidos ao tratamento ortodôntico." Universidade Estadual Paulista (UNESP), 2003. http://hdl.handle.net/11449/95808.
Full textObjetivou-se avaliar o efeito da retração dentária sobre o ponto A nos sentidos ântero-posterior e vertical, bem como a correlação e a previsibilidade dos comportamentos dessas estruturas. Utilizou-se 60 telerradiogafias em norma lateral, tomadas no início e no final do tratamento ortodôntico corretivo de 30 pacientes (22 femininos e 8 masculinos) entre 10 e 17 anos, com má oclusão de Classe II, divisão 1 e de Classe I, com extração dos primeiros pré-molares superiores. Além das grandezas 1.NA, 1-NA, 1.PP e 1-A, distâncias lineares horizontais e verticais foram mensuradas utilizando como referência uma linha horizontal 7o abaixo do plano SN e a sua perpendicular. Sendo normalmente distribuídos, todos os dados foram mensurados duas vezes, cujos valores médios foram submetidos ao teste t emparelhado, testes de correlação e de regressão linear. Em média, o ponto A retraiu 0,71 mm e deslocou para baixo 2,38 mm, acompanhando uma retração do ápice radicular de 1,03 mm e da borda incisal de 4,13 mm e uma extrusão dentária de 2,35 mm. Houve correlação positiva entre a retração do ponto A e do ápice radicular (r=0,75; a<0,0001) e da borda incisal (r=0,70; a<0,0001), demonstrando um padrão previsível no comportamento ântero-posterior. Concluiu-se que o ponto A retraiu e deslocou para baixo acompanhando o dente, demonstrando padrão previsível no sentido ântero-posterior.
It was aimed to evaluate the effect of retraction of anterior teeth on the point A antero-posteriorly and vertically, as well as the correlation and the predictability of the behavior of these structures. Sixty telerradiographs in lateral norm were taken, at the beginning and the end of corrective orthodontic treatment, from thirty patient (22 female and 8 male) aging from 10 to 17 years, with Class II, division 1 and Class I malocclusion and underwent maxillary first premolars extractions. Besides the variables 1.NA, 1-NA, U1/PP and U1?Avert, horizontal and vertical linear measurements were made in relation to a horizontal reference line constructed from the S-N plane minus 7o and its perpendicular. As distributed normally, all the data were measured twice, and the mean values were submitted to paired t test, linear correlation and regression tests. In average, point A retracted 0,71 mm and moved 2,38 mm downwardly, following 1,03 mm of root apex and 4,13 mm of incisal edge retraction, and 2,35 mm of tooth extrusion. The retraction of point A was positively correlated with root apex (r=0,75; p<0,0001) and with incisal edge retraction (r=0,70; p<0,0001), showing a predictable antero-posterior behavior. It was concluded that point A retracted and moved downwardly following the tooth, and the retraction of point A in relation to the anterior tooth showed predictable pattern.
Ramesh, Sathya. "High Resolution Satellite Images and LiDAR Data for Small-Area Building Extraction and Population Estimation." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12188/.
Full textRibeiro, Áurea Josefina. "Dentes Periodontalmente comprometidos: manter ou extrair? - um dilema na Medicina Dentária." Master's thesis, [s.n.], 2012. http://hdl.handle.net/10284/3779.
Full textOs implantes endo-ósseos constituem, hoje em dia, uma opção mais do que válida na reabilitação oral, podendo proporcionar a função e a estética tão desejadas pelo paciente. No entanto, eles só deverão ser utilizados para substituir os dentes previamente perdidos, não devendo ser usados indiscriminadamente para substituir os dentes. Esta premissa torna-se ainda mais válida em pacientes periodontais. De facto, para o médico dentista, um dos maiores paradigmas é avaliar quando um dente com prognóstico periodontal considerado questionável deve ser extraído ou mantido na cavidade oral. Além do conhecimento científico do próprio médico, esta questão envolve identificar os benefícios e os riscos de cada opção terapêutica, as expectativas do paciente perante o resultado final e ainda o tempo e os gastos envolvidos. Esta revisão bibliográfica pretende apresentar, à luz dos conhecimentos actuais, algumas linhas de orientação que auxiliem o clínico na tomada de decisão sobre quando manter ou extrair um dente com prognóstico periodontal questionável. Procedeu-se a uma pesquisa na base de dados Medline (Pubmed) no período compreendido entre Março e Julho de 2012. Podemos concluir que os benefícios e os riscos da opção terapêutica seleccionada devem ser equilibrados e que o comprometimento do paciente perante o tratamento deverá ser tido em consideração. Além disso, os custos económicos inerentes, a duração do tratamento e a experiência do médico dentista são igualmente factores a considerar. De qualquer das formas, é possível concluir que os dentes periodontalmente comprometidos devem ser tratados durante o máximo de tempo possível, devendo ser unicamente extraídos e substituídos por implantes apenas e quando o tratamento periodontal já não é mais possível. Nowadays, the endo-osseous implants are more than one valid option in oral rehabilitation and can provide the function and aesthetics desired by the patient. However, they should only be used to replace missing teeth and should not be used to replace teeth indiscriminately. This assumption becomes even more valid in periodontal patients. In fact, for the dentist, one of the highest paradigms is to assess when a tooth with a periodontal prognosis considered questionable must be extracted or retained in the oral cavity. In addition to the scientific knowledge of the physician, this question involves identifying the benefits and risks of each treatment option, the patient's expectations and also the time to be spent and the involved costs. This literature review aims to present, in the light of current knowledge, some guidelines to assist the clinician in making decisions about when to retain or extract a tooth with a questionable periodontal prognosis. The authors conducted a search in the Medline database (PubMed) in the period between March and July of 2012. We can conclude that the benefits and risks of the selected therapeutic option must be balanced and that the commitment of the patient before treatment should be taken into consideration. Additionally, the economic costs involved, the duration of the treatment and the experience of the dentist are also factors to consider. Either way, it can be concluded that periodontally compromised teeth should be treated for as long as possible, and should only be extracted and replaced by implants when periodontal treatment is no longer possible.
Lemke, Matthew Jon. "Polylactic acid (PLA) Membrane as a Sole TreatmentFor Alveolar Ridge Preservation." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1402664234.
Full textRamesh, Sathya Dong Pinliang. "High resolution satellite images and LiDAR data for small-area building extraction and population estimation." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/ark:/67531/metadc12188.
Full textMedina, Janaina Braga. "Sangramento pós-exodôntico em pacientes em fila de transplante hepático: análise retrospectiva." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/23/23154/tde-04042018-103742/.
Full textHepatic cirrhosis is the result of all long-term chronic diseases, which can compromise the liver, and is characterised by hepatic insufficiency (HI) and portal hypertension (PH). The coagulopathies seen in cirrhotic patients depend on several mechanisms involving both HI and PH, which impairs the routine physiological functions of the liver, such as synthesis of all coagulation factors, except the von Willebrand factor. All dental studies published until today could not associate the two tests commonly used prior to tooth extraction in these patients, namely, INR and platelets count, for presence of haemorrhagic events. The objective of this work was to assess the presence of intra- and post-operative bleeding in cirrhotic patients undergoing tooth extraction and to verify whether there exists an association between laboratory (i.e. platelets, haemoglobins, INR, TTPa, urea, creatinine) and clinical parameters (i.e. cirrhosis complications, disease stage, MELD score, type of tooth extraction, surgery time, number of teeth extracted). This is a cross-sectional, retrospective, observational study of cirrhotic patients who were on the liver transplant waiting list at the Healthcare Centre for Special Patients (CAPE) of the University of São Paulo Faculty of Dentistry (FOUSP). Data were obtained from the medical records of 224 patients and the Epi Info software was used to generate a database. A total of 190 visits were performed for 99 patients, resulting in 333 teeth extracted. The majority of the patients were male (75.44%) with mean age of 51.27 years old and elementary education level (23.56%). The greatest cause was hepatitis C (40.18%) and the most common cirrhosis complications were collateral circulation (66.80%), hepatic encephalopathy (56.30%) and ascite (64.20%). Plateletopenia (95.80%) was identified in 190 blood counts, anaemia (67.90%) in 129, and white blood cell changes in 110 (57.80%). The mean scores for INR was 1.45 (minimum 1.03 and maximum 2.71) and for platelets was 76,380 (minimum 16,000 and maximum 216,000). Only 12 patients presented haemorrhagic events during surgery and 12 after it. The only positive association was found between platelet counts and intra-operative haemorrhagic events (P = 0.26; Mann Whitney\'s test, confirmed with linear regression analysis). All the bleeding events were controlled with local measures. Cirrhotic patients who were on the liver transplant waiting list had a few bleeding events, all with little severity. Intra-operative haemorrhagic events are more likely to occur when the platelet count is low, but bleeding can be handled with simple local measures. Post-operative haemorrhagic events could not be associated with any variable, but no patient needed blood transfusion as the clinical picture improved spontaneously.
Basso, Fernanda Gonçalves 1983. "Avaliação da atividade fibronolitica oral em pacientes sob anticoagulação oral." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288066.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
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Resumo: Fibrinólise é o processo responsável pelo restabelecimento do fluxo sanguíneo no interior dos vasos, através da dissolução do coágulo formado após uma injúria vascular. Esse processo pode ser influenciado por diferentes fatores, como trauma tecidual e presença de processos inflamatórios ou infecciosos, que podem causar um aumento da atividade fibrinolítica local. Esse aumento, por sua vez, poderia causar a dissolução precoce do coágulo, aumentando o risco de eventos hemorrágicos pós-procedimentos invasivos, como extrações dentárias, principalmente em pacientes cujo processo hemostático encontra-se alterado, como aqueles sob anticoagulação oral. Portanto, o objetivo deste estudo foi o de avaliar a atividade fibrinolítica da cavidade oral de pacientes sob terapia de anticoagulação cumarínica, avaliando também fatores locais que pudessem influenciar esta atividade. Para tanto, foram selecionados 12 pacientes sob terapia de anticoagulação cumarínica com indicação para extrações dentárias, que foram submetidos a 20 procedimentos. Esses pacientes foram também submetidos à avaliação clínica e radiográfica, além de avaliação dos índices de saúde oral (Índice Gengival, índice de Placa e CPOD). Para avaliar a atividade fibrinolítica, foram coletadas amostras de saliva não-estimulada, pré e pós-procedimento de extração dentária, de sangue alveolar e de sangue periférico. Essas amostras de saliva e de sangue foram submetidas à avaliação da atividade fibrinolítica através do teste de Área de Lise em Placa de Fibrina. Para análise do nível de anticoagulação, foram realizados os testes de Tempo de Protrombina e análise da atividade dos fatores da coagulação dependentes de vintamina K (FII, FVII, FIX e FX). Nenhum evento hemorrágico foi observado no período pós-extração dentária. Os resultados do estudo da atividade fibrinolítica no sangue mostraram que esta foi maior na amostra de sangue alveolar, quando comparada ao sangue periférico (p=0,006). Essa atividade, por sua vez, apresentou correlação estatisticamente significativa com os índices de saúde oral (p=0,003/p=0,002). Os resultados do estudo da atividade fibrinolítica salivar mostraram um aumento significativo desta atividade após o procedimento de extração dentária (p=0,002/ p=0,003). Esse resultado, no entanto, não pôde ser correlacionado à variação do fluxo salivar e tampouco aos índices de saúde oral (IG e IP). Quando correlacionados a atividade fibrinolítica do sangue periférico e o nível de anticoagulação, estes não apresentaram correlação positiva (p=0,28). A correlação entre a atividade fibrinolítica do sangue alveolar e o nível de anticoagulação se mostrou limítrofe (p=0,053). A atividade fibrinolítica da cavidade oral parece estar fortemente associada aos fatores locais, como trauma tecidual e eventos inflamatórios, não apresentando a mesma associação com a anticoagulação.
Abstract: Fibrinolysis is a part of the haemostatic process that is responsible for reestablish the blood flow, by the dissolution of the fibrin clot formed after a vascular injury. This process can be altered by several factors, such as tissue trauma and presence of inflammatory or infectious process, which can increase the local fibrinolytic activity and, by that, cause precocious clot dissolution. This could increase the hemorrhagic risk after invasive procedures, like teeth extractions, especially in patients under oral anticoagulation. The aim of this study was to evaluate the oral fibrinolytic activity of patients under oral anticoagulation with cumarin agents and also to evaluate the local factors that could be involved on this activity. Twelve patients under oral anticoagulation who needed teeth extractions were enrolled on this study and submitted to twenty teeth extractions. These patients were submitted to clinical and radiographic evaluation and oral health analysis, by the measurement of oral health indexes (Gingival Index, Plaque Index and Decayed, Missing and Filled Teeth). Samples of non-stimulated saliva were collected before and after each procedure and samples of alveolar and peripheral blood were also collected. These samples were submitted to fibrinolytic activity analysis, by the Fibrin Plate Method. For the anticoagulation analysis, prothrombin time assay and analysis of activity of vitamin-K-dependent coagulation factors (II, VII, IX and X) were performed. As result, no hemorrhagic event was observed after the procedures. The results of the blood fibrinolytic activity analysis showed that the alveolar blood presented a higher fibriolytic activity than the peripheral blood (p=0,006). This activity also showed a positive correlation with the oral health indexes (p=0,003 - GI/ p=0,002 - PI). The salivary fibrinolytic activity showed a significant increase after the tooth extraction (p=0,002 - supernatant fraction/p=0,003 - precipitated fraction). This activity, however, could not be associated with the oral health indexes. The level of anticoagulation showed no correlation with the fibrinolytic activity of peripheral blood (p=0,28) and showed a bordering correlation with the fibrinolytic activity of the alveolar blood (p=0,053). The fibrinolytic activity of the oral cavity seems to be strongly associated to local factors, such as local trauma and local inflammatory conditions, not showing the same association to the oral anticoagulation itself.
Mestrado
Patologia
Mestre em Estomatopatologia
Karayil, Tushar [Verfasser], and Andreas [Akademischer Betreuer] Dengel. "Affective Image Captioning: Extraction and Semantic Arrangement of Image Information with Deep Neural Networks / Tushar Karayil ; Betreuer: Andreas Dengel." Kaiserslautern : Technische Universität Kaiserslautern, 2020. http://d-nb.info/1214640958/34.
Full textCastro, Fernando Silva de. "Avaliação da manutenção da dimensão de rebordo alveolar após enxerto aloplástico de composto ósseo de rícino pós-extração dental em rato, estudo radiográfico e histológico." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/82/82131/tde-10052006-093036/.
Full textThe aim of this work is to study the behavior of the castor bean alloplastic polymer bone graft on ridge preservation. The dental extraction cicatrization process is an atrophy process. There are preventive techniques for maintenance of the dimensions of the alveolar ridge. These techniques are: dental implant, guided bone regeneration, bone graft and the combination of these techniques. The technique of bone graft is based on filling the space with the biomaterial. The castor bean alloplastic polymer bone graft surpasses the alloplastic because it is of vegetable origin and shown efficient biomaterial in the odontological area. Eighteen rats had the left lateral incisor extracted and fourteen of them received castor bean alloplastic polymer bone graft in the extraction socket, forming the experimental group. These were divided in two groups with different sacrifice time, 30 and 45 days. The control group that did not receive any treatment. The last animal is the standard gold group that served as example of complete structure. The animals were killed and they had the tissue fragments removed in order to have histological analysis under optical microscopy. It was taken occlusal radiographs and lateral cefalometric radiographs in odontological films profile immediately after the extraction and after the death. The anatomical pieces were removed and processed for making of slices. It was evaluate histologically and radiographically the wound of the extraction sockets with the graft compared to physiologic repair. The result evidenced the maintenance dimension alveolar dental sockets in the groups that received castor bean alloplastic polymer bone graft. The graft technique showed to be efficient, resulting in a minimum decrease of the dimensions of the extraction sockets. In this present work the graft technique with castor bean alloplastic polymer bone graft came effective in the maintenance of the dimensions of the alveolar bone
Simplício, Hallissa. ""Avaliação da reabsorção radicular apical em incisivos submetidos à retração anterior" /." Araraquara : [s.n.], 2002. http://hdl.handle.net/11449/95821.
Full textBanca: Roberto Hideo Shimizu
Banca: Lídia Parsekian Martins
Resumo: A reabsorção radicular apical é um dos mais comuns e indesejáveis efeitos colaterais do tratamento ortodôntico sendo motivo de estudos com finalidade de seu entendimento e elaboração de medidas preventivas. Objetivou-se com o presente estudo determinar e quantificar radiograficamente a ocorrência de reabsorção radicular nos incisivos após a retração anterior, levando-se em consideração o dente estudado e sua relação com a quantidade de movimentação radicular ou modificação na inclinação do incisivo. Foram avaliados incisivos superiores e inferiores de 22 pacientes entre 12 e 25 anos, de ambos os gêneros, submetidos a tratamento ortodôntico com aparelho fixo e extração de pré-molares. A quantificação da reaborção radicular foi realizada pela diferença entre as medidas do comprimento radicular em radiografias periapicais nas fases pré e pós retração de incisivos.O controle da distorção da imagem radiográfica e da alteração na angulação dos incisivos foi realizada utilizando-se o método descrito por Linge & Linge (1983). Foram utilizadas telerradiografias laterais pré e pós retração de incisivos para relacionar a mudança de inclinação dos incisivos e quantidade de movimento vertical, horizontal e total do ápice radicular com a reabsorção radicular. Com base nos dados obtidos conclui-se que há reabsorção radicular significante na fase de retração de incisivos variando de 1,51 mm a 2,37 mm não relacionada com o movimento ou alteração de inclinação do ápice radicular destes dentes através do osso.
Abstract: Apical root resorption is among the most commom and undesirable counterside effects of orthodontic treatment. Thus it has been extensively studied in order to be prevented or minimized. The present research aimed to radiographically determine and quantify root resorption on incisors after retraction of the anterior segment. The root resoption and it's relation to the root movement or incisors tipping were considered. Upper and lower incisors of 12 to 25 years old patients, both gender, orthodontically treated with fixed appliance and premolars extraction were evaluated in the present study. The measurement of root resorption was obtained by the differences between root length on periapical radiographs, before and after incisors retraction. Distortion of the radiographic image and incisors tipping change control were controled using the methodology proposed by Linge & Linge (1983). Pre and post incisor retraction lateral cephalometric radiographs were used to establish the relation between root resorption and the tipping of the incisors and vertical, horizontal and total movement of the root apex. Based on the obtained data it was concluded that there is significant root resorption during incisors retraction movement, varing from 1.51 mm to 2.37 mm, and it is not related to the movement of root apex or to the tipping change of these teeth through the bone.
Mestre
Klügl, Peter [Verfasser], Frank [Gutachter] Puppe, Andreas [Gutachter] Dengel, and Ulrich [Gutachter] Furbach. "Context-specific Consistencies in Information Extraction: Rule-based and Probabilistic Approaches / Peter Klügl. Gutachter: Frank Puppe ; Andreas Dengel ; Ulrich Furbach." Würzburg : Würzburg University Press, 2015. http://d-nb.info/1111508453/34.
Full textPaulo, Diana Luísa de Oliveira Moreira. "A importância da odontologia na prática clínica equina." Bachelor's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2010. http://hdl.handle.net/10400.5/2398.
Full textA odontologia equina é uma área da prática clínica que se encontra em ascensão. O domínio desta área tem-se revelado bastante importante quando se pretende estimar a idade de um cavalo através da sua dentição. No entanto, a sua máxima importância prende-se com a prevenção de alterações que eventualmente possam surgir na cavidade oral do equino e com a identificação e resolução destas aquando da sua presença. É também de grande importância saber que, de entre a enorme variedade de patologias que esta cavidade pode apresentar, as alterações que se encontram com maior frequência são as maloclusões dos incisivos, os padrões de desgaste anormais nos pré-molares e molares, as complicações devidas à presença dos “dentes de lobo” e/ou dos dentes caninos e alterações que podem surgir em qualquer tipo de dente como os diastemas, a retenção de dentes decíduos, a polidontia e a oligodontia, as fracturas dentárias, as cáries, a doença periodontal e as fracturas maxilares e mandibulares rostrais. Para que a prevenção, identificação e resolução destas alterações odontológicas tenha êxito, é importante que o clínico se encontre familiarizado com os principais métodos de inspecção da cavidade oral do equino, com os sinais mais comummente apresentados pelo animal aquando de alterações odontológicas e com os principais instrumentos e métodos terapêuticos utilizados para a sua resolução. Nesta dissertação são abordados os quatro casos clínicos considerados mais representativos da variedade de alterações odontológicas encontradas durante o estágio curricular: uma égua com ondas cuja resolução levou a posteriores complicações, um cavalo com fractura rostral da mandíbula, um poldro bastante afectado pela muda dos dentes e um cavalo com arcadas assimétricas e “dentes de lobo” que lhe causavam desconforto.
ABSTRACT - The importance of odontology in equine clinical practice. - Equine odontology is an ascending area in clinical practice. The relevance of this area has been of great importance when estimating horse's age by its dentition. However, its greatest potential lies in prevention, diagnostic and treatment of the changes which may appear in equine's oral cavity. The clinician should also be aware of the most important pathologies and physiologic changes occurring within the oral cavity. Incisive malocclusions, abnormal premolar and molar wear patterns, wolf tooth and canine tooth associated complications, diastemata, retained deciduos teeth, polidontia, oligodontia, dental fractures, caries and periodontal disease, fractures of the rostral portion of the mandible and maxilla, are some of the most frequent odontologic alterations. The prevention, identification and treatment of these odontological alterations require good practice. Clinician should be familiarized with the main methods and protocols of inspection of the oral cavity. Professionals should also know the main signs and symptoms manifested by the animal. Finally, he should be acquainted with the instruments and therapeutic approach used for their resolution. In this thesis the most frequent and relevant clinical cases are discussed. These cases were observed, followed and treated during the curricular internship and represent the most frequent and common odontologic changes. A mare with with wave mouth and iatrogenic complications. A horse with a rostral mandibular fracture. A colt affected by the growth of definitive teeth. A horse with shear mouth and uncomfortable woolf teeth.
Garcia, Luciane Tomasi Dalmolin. "Análise cinético-funcional comparativa no procedimento de exodontia via fórceps convencional (utilizando empunhadura reversa) e ergofórceps." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/743.
Full textErgonomics applied to the dental activity aims to rationalize the procedures, avoiding unnecessary fatigue to the professional, while still offering safety and comfort to the patient. The extraction, among the several surgical procedures, is considered to cause increased wear and fatigue. To minimize these difficulties, Pece and Naressi (1995) developed a systematic and differentiated extraction technique and the corresponding instrument, a forceps named Ergoforceps. This study aims to compare kinetically and functionally the activity of extraction with the conventional forceps and the ergonomic forceps. For this research, twenty volunteers from the dentistry course of UFPR were analyzed during the activity of alveolar extraction. Photographic images and footage formed the basis for the application of RULA and MOORE GARG (Strain Index) tools. A questionnaire was also applied to the volunteers. These ergonomic analysis tools were selected since they were considered the most suitable to assess the effort made by the upper limbs. The grip used with the conventional forceps was the reverse, which has biomechanical advantages over the traditional. The results obtained with the RULA method for the extraction forceps were: 70% score 5 (moderate risk) and 30% score 6 (moderate risk). In contrast, when the Ergoforceps was used: 70% score 4 (low risk) and 30% score 3 (low risk). With the Moore Garg tool, the score of the volunteers when using the extraction forceps were: 30% score 3 (doubtful) and 70% score 4.5 (doubtful). In contrast, when the Ergofórceps was used the score was: 90% score 1 (low risk) and 10% score 2 (low risk). The results suggest that systematic extraction undergone with the Ergoforceps has ergonomic advantages and reduces the risk of developing occupational injuries among dentists.
Greatrex, P. A. F. "The extraction of permanent second molars and its effect on the dentofacial complex : a thesis submitted in partial fulfillment of the requirements for the degree of Master of Dental Surgery /." Title page, Contents and Abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09DM/09dmg786.pdf.
Full textAlzahrani, Fatma Salem. "Comparative studies of the anaesthetic efficacy of 4% articaine used as mandibular infiltration versus 2% lidocaine used as inferior dental nerve block in extraction and pulpotomy of mandibular primary molars." Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/11237/.
Full textMattox, Shayna L. "A Randomized Controlled Trial: Absorbable Hemostatic Pack Effect on Bleeding Time Following Extraction of Primary Maxillary Incisors." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1594225380425452.
Full textPatrocinio, Ana Claudia. "Classificador automático de achados mamográficos em imagens digitais de mamas densas utilizando técnicas híbridas." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-16022016-123302/.
Full textThis thesis presents a methodology for automatic classification of mamographic findings in image of dense breast through hybrid approach of classifiers and features extraction techniques, as part of a computer-aided diagnostic (CAD) scheme for mammography. Two Backpropagation neural networks were implemented. One for microcalcifications clustered classification, through geometric descriptors, in two classes - suspect and non-suspect. The other neural network classifies nodules using geometric descriptors and additional information from intensity features extracted, producing in the output two kinds of information: presence or not of the nodule, and if nodule is present in the image, classification among BI-RADS categories. The result of clustering technique by using intensity features is presented as a new input to neural network, supplying density degree of image. An interface was developed for results presentation in order to supply more detailed information from the classifier outputs and of the analyzed case. The results of the classifier were analyzed through sensibility and specificity statistical analysis, and also for ROC curves. The results were close to 89% of total accuracy (positive-true plus negative-true) for nodules producing value of Az more than 0,92 and 75% of accuracy to classification among BI-RADS categories. In the cluster classification the total accuracy is about 90%, and Az greater than 0,94. In both kinds of lesions, negative-false result rates were below 0,1, which means low error related to the fail to detect the disease when the signal is present. The classifier presented in this work is the conclusion of an important stage of the CAD scheme that has been developed by the group, besides making possible the availability of one more automatic tool of aid to the breast cancer diagnosis to be used in mammography centers.
Melo, RadamÃs Bezerra. "Anti-inflammatory and antioxidant action of oil mixes of omega 9, 6 and 3 with low ratio omega-6/omega-3 and high ratio omega-9/omega-6 after dental extraction in rats." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17575.
Full textOil fatty acids omega-3 and omega-9 have anti-inflammatory and antioxidant activities, while the omega-6 has pro-inflammatory action. The aim of this study was to evaluate the presence of antioxidant and anti-inflammatory effects with high nutraceutical ratio of omega-9: omega-6, antioxidant properties, and low ratio omega-6: omega-3, anti-inflammatory properties three days after tooth extraction in rats. Thirty-two young Wistar rats with 270-310g were randomly divided into four groups of 8 animals: Group Sham, Saline Group, Isolipid Group, and Mix Test Group. The animals received 0.9% NaCl, Sham Group and Salina Group, or Isolipid Mix (alpha-linolenic acid - ALA) mixture containing omega-6: omega-3 oils (ratio 8:01) and omega-9: omega-6 (ratio 0.4:1), Isolipid group, or Mix Test (alpha-linolenic acid - ALA, docosahexaenoic acid - DHA, eicosapentaenoic acid - EPA) omega-6: omega-3 (ratio 1.4: 1) and omega-9: omega -6 (3.4:1 ratio), Mix Text Group by gavage 1.2g solutions for kg/day for four days before and three days after the extraction of the left mandibular first molar. Evaluation of edema generated by the surgical procedure and collected the perialveolar the site of tooth extraction and dental alveolar mucosa itself for laboratory testing were performed: myeloperoxidase, osteoclast count, concentrations of TNF-α and IL-1β, glutathione (GSH) and thiobarbituric acid reactive substances (TBARS). The Mix Test induced a significant decrease on post-operative edema, myeloperoxidase , osteoclasts count , GSH in blood and tissue, on tissue and plasma TBARS and on the TNF-αconcentration, but did not show significant difference on the IL-1β concentration at the third post-operative day. The gavage with the Mix Test showed anti-inflammatory and antioxidant actions after molar tooth extraction in rats.
Os Ãcidos graxos insaturados Ãmega-3 e Ãmega-9 possuem aÃÃo anti-inflamatÃria e antioxidante, enquanto o Ãmega-6 possui aÃÃo prÃ-inflamatÃria. O objetivo do presente estudo foi avaliar a aÃÃo antioxidante e anti-inflamatÃria do mix de Ãleos em concentraÃÃes nutracÃuticas com alta razÃo Ãmega-9: Ãmega-6, favorecendo aÃÃo antioxidante, e baixa razÃo Ãmega-6:Ãmega-3, favorecendo aÃÃo anti-inflamatÃria no terceiro dia pÃs exodontia em ratos. Foram utilizados trinta e dois ratos Wistar jovens com 270-310g distribuÃdos aleatoriamente em quatro grupos de 8 animais: Grupo Sham, Grupo SoluÃÃo Salina, Grupo mix isolipÃdico e Mix Teste. Os animais receberam NaCl 0,9%, Grupo Sham e Grupo SoluÃÃo Salina, ou mix isolipÃdico, (Ãcido alfa-linolÃico - ALA) mistura contendo Ãmega-6:Ãmega-3 Ãleos (relaÃÃo de 8:01) e Ãmega-9:Ãmega-6 (relaÃÃo 0,4:1), Grupo IsolipÃdico, ou Mix Teste (Ãcido alfa-linolÃnico - ALA, Ãcido docosahexaenÃico - DHA, Ãcido eicosapentaenÃico - EPA) de Ãmega-6:Ãmega-3 (relaÃÃo 1,4:1) e Ãmega-9:Ãmega -6 (3,4:1 relaÃÃo), Grupo Teste, receberam por gavagem 1,2g da soluÃÃo correspondente a cada grupo por kg/dia durante quatro dias antes e trÃs dias apÃs a exodontia do primeiro molar inferior esquerdo. Foi realizada a avaliaÃÃo do edema gerado pelo procedimento cirÃrgico e coletada a mucosa perialveolar ao sÃtio da extraÃÃo dental e o prÃprio alvÃolo dental para anÃlises laboratoriais: mieloperoxidase, contagem de osteoclastos, expressÃo do TNF-α e IL-1β, glutationa (GSH) e substÃncias reativas ao Ãcido tiobarbitÃrico (TBARS). O Mix Teste induziu uma diminuiÃÃo significante na atividade da mieloperoxidase,no edema pÃs operatÃrio, na contagem de osteoclastos, na GSH plasmÃtica e do tecido, nas concentraÃÃes plasmÃticas e do tecido de TBARS, na expressÃo do TNF-α, mas nÃo mostrou diferenÃa significante na expressÃo de IL-1β no terceiro dia pÃs-operatÃrio. A administraÃÃo por gavagem do Mix Teste demonstrou uma reduÃÃo da resposta inflamatÃria e oxidante, atuando como anti-inflamatÃrio e antioxidante, apÃs exodontia em ratos
Lisboa, Alessandro Hyczy. "Ansiedade, classificação radiográfica e controle da dor em exodontias de terceiros molares inferiores." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2012. http://tede2.uepg.br/jspui/handle/prefix/1801.
Full textThe objective of this study was to compare the existing level of anxiety in patients undergoing different surgical procedures on an outpatient basis, and determine the prevalence of third molar position, establishing its position and inclination, in relation to the classification of Winter and to the classification of Pell & Gregory, and to evaluate the effect of the preemptive use of ibuprofen associated with arginine, etoricoxib and dexamethasone in controlling pain after extraction of mandibular third molar. To evaluate the existence of differences in degree of anxiety in patients undergoing different forms of surgical procedures, the patients were selected (n = 60) who required extractions of third molars, which were compared with others (n = 62) that underwent simple dental extractions. The results indicate that there was no association between anxiety level and gender, but to evaluate the type of surgery used was found that patients undergoing conventional extractions indicated greater levels of anxiety than patients undergoing surgery for third molars. For the radiographic classification, radiographs were analyzed from 1150 third molars which were related to the classification of Winter as its angle to the long axis of the adjacent second molar and Pell & Gregory that determines its position in relation to the branch the mandible and the occlusal plane of the second molar. It was observed that the position was the most common mesioangular (28,52%) as classified by Winter,according to the classification of Gregory & Pell, 27,30% were Class II and 29,82% were in position A. In this randomized clinical trial, parallel and blind study, patients were divided into 4 groups (G): G1 received 600mg of ibuprofen with 555mg of arginine, G2 received 90 mg etoricoxib, G3 who received 8 mg dexamethasone, and G4 received placebo, all administered orally 90 minutes before surgery. Pain intensity was evaluated on a numerical scale of 101 points (101P) and the four point verbal rating scale (VRS) after 2, 4, 6, 8, 12, 24, 36 and 48 hours. Statistical analysis was performed with the Kruskall-Wallis, ANOVA and chi-square test (p 0.05). In the first stage patients were divided into G1 (n = 10), G2 (n = 9), G3 (n = 10) and G4 (n = 13) and it is concluded that all the protocols shown evaluated to be superior to placebo the first 4 hours, and the use of dexamethasone or etoricoxib resulted in lower consumption of rescue analgesia. In the second phase, we selected 60 patients who were randomly divided into 15 for each group. The G4 group had higher pain intensity than the other groups in the 2, 4, 12 and 48 hours. The G3 had more pain than G2 after 2 hours, as well as in relation to G1 after 2 and 4 hours. Again it was observed that all the protocols evaluated proved superior to placebo for both scales and used at different times after surgery, for controlling postoperative pain.
O objetivo deste trabalho foi comparar o nível de ansiedade existente em pacientes submetidos a distintos procedimentos cirúrgicos em âmbito ambulatorial; verificar a prevalência da posição de terceiros molares inferiores, estabelecendo a sua posição e inclinação, em relação às classificações de Winter e de Pell & Gregory; e verificar o efeito da utilização preemptiva de ibuprofeno associado à arginina, etoricoxibe e dexametasona no controle da dor pós exodontia de terceiros molares inferiores. Para avaliar a existência de diferença no grau de ansiedade em pacientes submetidos a distintas modalidades de procedimentos cirúrgicos, foram selecionados pacientes (n=60) que necessitavam de exodontias de terceiros molares, os quais foram comparados com outros (n=62) que foram submetidos a exodontias simples. Os resultados apontam que não houve associação entre nível de ansiedade e gênero, porém ao avaliar a modalidade de cirurgia empregada encontrou-se que os pacientes submetidos à exodontias convencionais denotaram maior grau de ansiedade do que os pacientes submetidos a cirurgias de terceiros molares. Para a classificação radiográfica, foram analisadas radiografias de 1150 terceiros molares inferiores os quais foram relacionados com a classificação de Winter quanto a sua angulação em relação ao longo eixo do segundo molar adjacente e de Pell & Gregory que determina a sua posição em relação com o ramo da mandíbula e ao plano oclusal do segundo molar. Observou-se que a posição mais comum foi a mesioangular (28,52%), segundo a classificação de Winter, e de acordo com a classificação de Pell & Gregory, 27,30% estavam em Classe II e 29,82% estavam em posição A. Nesse um estudo clínico randomizado, paralelo e cego os pacientes foram divididos em 4 grupos (G): G1 que recebeu 600mg de ibuprofeno com 555mg de arginina, G2 que recebeu 90 mg de etoricoxibe, G3 que recebeu 8 mg de dexametasona, e o G4 que recebeu placebo, todos administrados por via oral 90 minutos antes da cirurgia. A intensidade da dor foi avaliada pela escala numérica de 101 pontos (101P) e a escala verbal de 4 pontos (VRS) após 2, 4, 6, 8, 12, 24, 36 e 48 horas. A análise estatística foi feita com os testes de Kruskall-Wallis, ANOVA e Qui-quadrado (p0,05). Na primeira fase os pacientes foram divididos em G1 (n=10), G2 (n=9), G3 (n=10) e G4 (n=13) e conclui-se que todos os protocolos avaliados mostraram-se superior ao placebo nas primeiras 4 horas, sendo que o uso do etoricoxibe ou da dexametasona resultaram em menor consumo de analgésicos resgate. Na segunda fase foram selecionados 60 pacientes, que foram randomicamente divididos em 15 para cada grupo. O grupo G4 apresentou maior intensidade de dor do que os demais grupos, nos períodos de 2, 4, 12 e 48 horas. O G3 apresentou maior intensidade de dor do que G2 após 2 horas, bem como em relação ao G1 após 2 e 4 horas. Novamente observou-se que todos os protocolos avaliados mostraram-se superior ao placebo em ambas as escalas utilizadas e em diferentes momentos após a cirurgia, para o controle da dor pós-operatória.
Ghelardi, Isis Raquel. "O uso do agente hemostático a base de quitosana no controle hemorrágico pós-exodontias realizadas em portadores de trombocitopenias." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5167/tde-28042014-162848/.
Full textIntroduction: Thrombocytopenia is an abnormally low amount of platelets caused by many conditions as liver disorders and immune thrombocytopenia for example. The reduction of platele count in liver disorders may be caused by bone marrow deficiency due to hypovitaminosis, hypersplenism and disseminated intravascular coagulation while in immune thrombocytopenia may be caused by greater desctruction of these cells or its diminished production by the bone marrow. Patients with thrombocytopenia may present oral manifestations as petechiae and/or ecchymosis and provoked/spontaneous gingival bleeding. In these patients, surgical dental procedures should be performed with caution and only after a detailed medical assessment, preferably performed by a specialist. The dental management of patients with thrombocytopenia is still controversial regarding the amount of platelets and the need of platelet infusion prior to these procedures. To this date, no clinical guidelines has been developed regarding the dental management of patients with thrombocytopenia. Many hemostatic agents has been used to control post surgical bleeding. Many studies had shown thay chitosan is effective and cheaper than fibrin sealant, one of the most popular hemostatic agents. Objetive: This study was design to assess the effect of chitosan as a local haemostatic agent in patients with platelet count <= 30.000/mm3 compared to patients with thrombocytopenia and platelet count of 31.000/mm3 to 50.000/mm3 submitted to single dental extraction and to describe the protocol for dental treatment of patients with platelet count lower than 50.000/mm3 in a tertiary health science center. Methods: Patients with thrombocytopenia with platelet count lower than 50.000/mm3 were assessed. Patients with platelet count lower than 30.000/mm3 (study group) and patients with platelet count of 31.000/mm3 to 50.000/mm3 (control group) were submitted to single dental extraction. Chitosan was used only in the study group and no other type of hemostatic agent was used in the control group. Bleeding was measured according to the post dental extraction index (ISAPE) seven days after dental extraction. The results were statistically analyzed using the Statistical Package for Social Sciences (SPSS) 20.0 program. For statistical analysis, the Mann-Whitney test, Chi-square test, Spearman\'s rank correlation coeficient and confidence interval for relative risk (95%) were used. P< 0.05 was considered statistically significant. Results: Forty-one single dental extractions were performed between March/2011 and September/2012. The mean age of patients was 46,58 ±10,87 years of age. Median was 48,50 ranging from 20 to 64 years of age. Fifty-one percent (n=21) were females and 48,79% (n=20) males. Twenty-one extarctions were performe in the Chitosan group and 20 in the control group. Chitosan group presented platelet count of 5.000 to 30.000/mm3 and mean ISAPE médio of 0,10; where two patients (9.52%) had ISAPE greater than zero Control group presented with platelet count of 31.000 to 50.000/mm3, mean ISAPE of 0,40 and six patients (30%) with ISAPE greater than zero. No statistical significance was related to the ISAPE between groups. Discussion: The dental management of patients with thrombocytopenia is still controversial regarding the amount of platelets and the need of platelet infusion prior to these procedures. To this date, no clinical guidelines has been developed regarding the dental management of patients with thrombocytopenia. Many studies have tried to establish the minimal platelet count and the need of platelet infusion prior to oral surgery. Unfortunately, the scientific literature is controversial. Some authors recommend platelet infusion prior to oral surgery in patients with platelel count of 100.000/mm3 while others report that single extractions can be performed safely in patients with platelet count 30.000/mm3. In our study, the ISAPE was not stastistically diferent between groups, what may be explained by the heterogenicity of patients in both groups and by the small sample. However, the greater amount of patients (90%) who presented ISAPE greater 0 showed the effectiveness of chitosan as a hemostatic agent in agreement with previous authors as Belman et al.(2006), Brown et al.(2007) e Wedmore et al.(2006) that presented 80,0%, 79,0% e 97,0%, respectively. Conclusion: No difference was found regarding the effectiveness of chitosan as hemostatic agent between groups. A clinical guideline was developed on dental management of patients with thrombocytopenia and since then it has been used daily at the Department of Dentistry HC-FMUSP
Nogueira, Rodrigo de Moura [UNESP]. "Fístula oronasal em cão: reparo com flape simples associado a fator proteíco angiogênico purificado do látex de seringueira, veiculado com matriz de esponja de colágeno : estudo experimental." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/89032.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A fístula oronasal é uma comunicação anormal entre a cavidade oral e nasal. É ocasionada normalmente por doença periodontal avançada, onde o vértice alveolar, principalmente do canino superior, sofre processo de degeneração resultando na injúria; também pode ser causada por traumas, corpos estranhos, extrações dentárias inadequadas, cirurgias na cavidade oral, choques elétricos e atropelamentos. Nos cães, as fístulas acarretam vários sinais clínicos como espirros, secreção nasal, sinusites, rinites, infecções no trato respiratório e até pneumonias aspirativas. Devido à periodontites crônicas e o pouco tecido circunjacente, são de difícil reparação, sendo o pós-operatório problemático pela ocorrência de deiscência de sutura e recidiva com concomitante processo inflamatório e infecção. O látex da seringueira (Hevea brasilienses) mostrou em vários outros experimentos seu poder angiogênico e cicatrizante na formação tecidual. Este experimento teve por finalidade utilizar fração proteica purificada do látex de seringueira no reparo de comunicações oronasais provocadas, para simulação experimental de fístula, após exodontia de caninos superiores de cães. Foram obtidos como resultados uma melhor qualidade na cicatrização, menor processo inflamatório ao final de 21 dias, menor ocorrência de deiscência de sutura e maior quantidade de tecido ósseo no alvéolo, concluindo-se que a utilização do fator proteico auxilia no processo de reparo, tornando-o mais rápido e eficiente
The oronasal fistula is an abnormal communication between oral and nasal cavities. It is generally caused by advanced periodontal disease, where the alveolar vertex, especially from the superior canine tooth, become degenerated resulting in that injury; it can either be caused by trauma, foreign bodies, inappropriate dental extractions, surgeries in the oral cavity, electric shock and car run over. In dogs, fistulas may cause several clinical signs as sneeze, nasal secretion, sinusitis, rhinitis, respiratory tract infection and even aspiration pneumonia. Because of chronic periodontitis and little tissue surrounding the fistulas, they are hard to repair; with difficult post-operative period due to the occurrence of suture dehiscence and fistulae recurrence with concomitant inflammatory process and infections. In others several experiments the rubber tree latex (Hevea brasiliensis) showed its angiogenic and healing power in tissue growth formation. The purpose of this experiment was to use a purified protein fraction from rubber tree latex to repair an oronasal communication induced for experimental simulation of the fistula, after extraction of superior canines in dogs. The obtained results corresponded to better healing quality, less inflammatory process after 21 days, less suture dehiscence and more alveolar bone tissue, concluding that the utilization of the protein factor helps in the repair process, making it faster and efficient
Santos, José Ricardo Prando dos [UNESP]. "Avaliação da movimentação dentária fisiológica durante o tratamento da Classe I de Angle após a extração de pré-molares." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/104523.
Full textO propósito deste estudo foi avaliar a movimentação dentária fisiológica no arco inferior após as extrações dos primeiros pré-molares. A amostra consistiu de 11 indivíduos, 7 meninos e 4 meninas, com idade média de 14,4 anos que apresentavam má oclusão Classe I com apinhamento severo tratados com extração dos quatro primeiros pré-molares. Com exceção das extrações, nenhum outro tratamento no arco inferior foi realizado. Os registros utilizados foram radiografias panorâmicas, telerradiografias laterais e modelos de gesso realizados antes das extrações, três e seis meses após as extrações. Os resultados não demonstraram diferença significante na angulação mesial dos primeiros molares e do segundo pré-molar direito, somente para o segundo pré-molar esquerdo nos primeiros três meses. Houve uma suave diminuição nas larguras intermolares e interpré-molares nos primeiros três meses. Os caninos demonstraram a maior angulação distal e um suave aumento na largura intercaninos durante os três primeiros meses após as extrações dos pré-molares. Os incisivos mostraram inclinação lingual e diminuição no índice de irregularidade durante o período de avaliação. Os espaços das extrações diminuíram durante o período avaliado.
The purpose of this study was to evaluate the tooth physiologic drift in the lower arch following the extraction of first premolars. The sample consisted of 11 subjects, 7 boys and 4 girls, mean age 14.4 years who had Class I malocclusion with severe crowding had been treated by the extraction of four first premolars. Except for the extractions, no other lower arch therapy was rendered. The records used were panoramic radiographs, lateral cephalometric radiographs and dental casts that were taken before the extractions, three and six months after the extractions. The results showed no significant difference in mesial tipping of the first molars and the right second premolar, only for the left second premolar in the first three months. There was slight decrease in intermolar and interpremolar widths in the first three months. Canines showed the greatest distal tipping and slight increase in the intercanine with during the first three months following premolar extractions. Incisor showed lingual tipping and decrease in the irregularity index during the evaluated period. The extraction spaces decreased during the evaluated period.
Bressane, Larissa Borges. "Avaliação longitudinal da reabertura de espaços de extração após o tratamento ortodôntico da má oclusão de Classe I." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/25/25144/tde-05042013-154547/.
Full textIn order to contribute with orthodontic literature upon extraction space reopening prevalence and etiology, this studys aim is: to verify the prevalence of extraction space reopening after orthodontic treatment of Class I malocclusion with four first premolar extractions; to identify the arch with higher occurrence; to evaluate the space changes in 1 and 5 years after treatment; to seek for associations with other clinical aspects such as initial mandibular crowding, amount of mandibular incisors retraction during treatment and angulation between canines and second premolars crowns. The sample of this long-term study comprised orthodontic records of 54 patients, who were treated in the clinic of Orthodontics of Bauru Dental School University of Sao Paulo. This sample was divided into two groups: Group 1, consisted of at least one extraction space reopening and group 2, without space reopening. The casts were digitalized by a 3D 3Shape R700 scanner (3Shape A/S,Copenhagen, Denmark) and measured on OrthoAnalyzerTM 3D software. Initial and final cephalometric radiographs were analyzed using Dolphin®Imaging 11.5 (Chatsworth, CA, USA) to measure the amount of mandibular incisors retraction during treatment. Quantitative changes of extraction sites over time were compared by Friedmans test and qualitative changes by McNemars test. T tests were used to compare the groups. The significance level for all statistics tests was p <0.05. Results showed that 33.33% of the complete sample demonstrated space reopening in the posttreatment period, with higher prevalence in the maxillary arch. The amount and frequency of the spaces tended to decrease 5 years after the end of treatment. Patients with space reopening had less initial anterior crowding and an increased amount of mandibular incisor retraction during treatment. Final neighboring tooth angulations were similar in both groups.