Relevant bibliographies by topics / Diastermy

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  2. Dissertations / Theses
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  4. Book chapters
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Academic literature on the topic 'Diastermy'

Author: Grafiati
Published: 27 February 2023

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Journal articles on the topic "Diastermy"

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Belivanova, Veneta, and Ivo Sapunov. "The pre-Callovian stratigraphic gap in the Central Balkanids: a key for the interpretation of other Early-Middle Jurassic gaps in Bulgaria." Geologica Balcanica 33, no. 1-2 (June 30, 2003): 17–33. http://dx.doi.org/10.52321/geolbalc.33.1-2.17.

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The pre-Callovian stratigraphic gap in the Central Balkanids is distributed in the Etropole, Teteven, Troyan, Kazanluk, Gabrovo and Turgovishte Districts. To the west (village of Gintsi, Sofia District) and to the east (the section of well R-3 Yunak, District of Yarn a) of the gap uninterrupted Bathonian-Callovian rock successions exist. In its western and eastern parts the pre-Callovian stratigraphic gap is a diastem. In these localities the gap embraces minimum duration. In the western diastem the duration of the gap is from the Late Bathonian to the Early Callovian. In the eastern diastem the duration of the gap is probably in the framework of the Late Bathonian. In many localities where the gap is diastem the boundary between the basement and the cover is marked by hardgrounds. In its central part (Troyan, Kazanluk and Gabrovo Districts) the pre-Callovian stratigraphic gap is with much longer duration. This is caused by the intensive submarine washout of the earlier deposited Middle and Lower Jurassic sediments. In limited localities the Callovian from the cover lies directly even above Upper Triassic rocks. Almost everywhere the cover of the gap is represented by condensed Middle-Upper Callovian micritic limestones. They are rich of ammonites. The main microfacies type is mudstone/wackestone with filaments from thin-shelled bivalves. It is correlated with the Standard Microfacies Type 3 (SMF 3) - "pelagic mudstone and wackestone". It is formed in the lower part of the deep sublittoral, which is in consent with the ba thymetric interpretations based on the characteristics of the respective faunal spectra. The Callovian limestones in conditions of uninterrupted sedimentation show similar microfacies characteristics. In the localities where the pre-Callovian gap is a diastem, the conclusions for the microfacies characteristics and for the faunal spectra of the Bathonian sandy bioclastic limestones are similar. The microfacies type is bioclastic-lithoclastic packstonelrudstone, which can be attributed to some extent to the SMF 4 - "bioclastic-lithoclastic packstone". It may be supposed that the features of this texture direct to a more shallow parts of the deep sublittoral. Almost the same characteristics have the Bathonian limestones and marls in conditions of uninterrupted sedimentation. In general, the pre-Callovian gap is realized in submarine conditions, which are connected with the deep sublittoral. There are four stages in the transition between normal sedimentation and submarine gap: normal sedimentation (in which biostratigraphic superposition is traceable) → slow sedimentation (condensations) → submarine stratigraphic gaps (as a result of non-deposition - diastems) → submarine stratigraphic gaps (as a result of submarine washout).
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Maryam, Bibi, Javaria Imtiaz, Umar Nasir, Shaheen ., Aqsa Mumtaz, and Nauman Ullah. "Frequency of Midline Diastema in patients reported To OPD of Bacha Khan Medical College Mardan." Pakistan Journal of Medical and Health Sciences 16, no. 5 (May 30, 2022): 1147–50. http://dx.doi.org/10.53350/pjmhs221651147.

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Background: A space between adjacent central incisor teeth is termed "diastema or diastemata". Midline diastema in mixed dentition is a great center of concern for parents as well as their children, therefore, determining the time of closure of midline diastema is essential for clinical practice in Orthodontic and the study was aimed to determine the frequency of midline diastema in both maxillary and mandibular arches in patients. Material and Method: The current study was carried out at Bacha Khan Medical College Mardan, Khyber Pukhtoon Khwa to determine the frequency of midline diastema in both maxillary and mandibular arches in patients for which a total of 200 responders have examined 100 responders were males while 100 were female. Results: The frequency of Midline diastema was 12%, out of 200 hundred in which Maxillary midline diastema was 5% and Mandibular midline diastema was 5.5% and both the arches were found to be 1.5% in females. Conclusion: The finding of the current study is that the population of Khyber Pukhtunkhwa has several Midline diastemata affecting their esthetic. A similar study to find out the etiology of Midline diastema is suggested which requires a large sample size. Keywords: Midline diastema, Frequency, Orthodontic
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Al-Hashimi, Hadeel. "Significance Of Various Etiological Factors As An Indicator For The Persistence Of Median Diastema." Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), no. 2 (October 19, 2021): 139–56. http://dx.doi.org/10.55562/jrucs.v30i2.371.

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Maxillary midline diastemas are a common esthetic problem that dentists must treat. This study was performed to quantify the width of median diastema and level of bone crest and to determine the type of inter-maxillary suture, familial prevalence, spacing in upper anterior region, axial inclination of upper centeral incisors, and low frenal attachment as the most contributing factors associated with median diastema. A standardized periapical radiographs using a paralleling technique with a film holder were taken to the (99) maxillary and/or mandibular centeral incisors with median diastema and to the (85) maxillary incisors with no diastema as a control group in adults with age range from 18-25 years old. Diastema width between 0.5-1 mm has a higher percent while diastema above 2 mm has a least percent. There is a non-significant difference in the level of alveolar crest of central incisor in both control and diastema groups. Type I intermaxillary suture type was the most common in control group while type II and III were the most common in diastema. There is a relationship between spacing and type of intermaxillary suture which can use as an indicator for the persistence of diastema from childhood in addition to familial history while frenum may has no effective role in developing median diastema. Axial inclination of central incisors is one of important factors that should be taken in consideration during treatment of median diastema
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Carruitero, Marcos J., Aron Aliaga-Del Castillo, Daniela Garib, and Guilherme Janson. "Stability of maxillary interincisor diastema closure after extraction orthodontic treatment." Angle Orthodontist 90, no. 5 (May 22, 2020): 627–33. http://dx.doi.org/10.2319/080619-516.

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ABSTRACT Objectives To evaluate the stability of maxillary interincisor diastema closure and the relationship between space relapse and interincisor diastema width, overjet, overbite, angulations between adjacent maxillary anterior teeth and presence of intermaxillary osseous cleft after orthodontic treatment with extractions. Materials and Methods Twenty-four individuals with a maxillary interincisor diastema pretreatment, treated with maxillary first premolar extractions were evaluated. Dental casts and panoramic radiographs taken at pretreatment (T1), posttreatment (T2), and posttreatment follow-up (T3) were assessed. Periapical radiographs at T1 and T2 were also evaluated. Diastema relapse was assumed when T3-T2 interincisor space change was greater than zero. Diastema relapse was considered clinically significant when it was at least 0.50 mm. Data were analyzed using repeated-measures analysis of variance followed by post hoc Tukey tests or Friedman followed by Wilcoxon tests. T-test or Mann-Whitney U-test, Pearson correlation coefficient, and multiple linear regression analyses were also performed. Results No statistically significant relapse of maxillary interincisor diastemas was found. The percentage of clinically significant relapse of the maxillary interincisor diastemas was 27.78%. Specifically, for the interincisor midline diastema, it was 8.33%. Conclusions Maxillary interincisor diastema closure showed no statistically significant relapse after orthodontic treatment with premolar extractions. Clinically significant stability for maxillary interincisor diastema closure was 72.22% and, specifically, for interincisor midline diastema closure, it was 91.67%.
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Jaija, Abdullah M. Zakria, Amr Ragab El-Beialy, and Yehya A. Mostafa. "Revisiting the Factors Underlying Maxillary Midline Diastema." Scientifica 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/5607594.

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Aim. The aim of this study is to analyze the etiological factors underlying the presence of maxillary midline diastema in a sample of orthodontic patients.Materials and Methods. One hundred patients who fulfill the inclusion criteria were selected from 1355 patients seeking orthodontic treatment. The pretreatment orthodontic records were analyzed. The width of the maxillary midline diastema was measured clinically with a digital caliper at two levels: the mesioincisal angles of the central incisors and five millimeters from the incisal edge. The two measurements were averaged, and patients with diastema of more than 0.5 millimeter in width were enrolled.Results. Diastema is a multifactorial clinical finding with more than one underlying etiological cause. The interrelationship between the familial pattern of midline diastema and the microdontia, macroglossia, labial frenum, and alveolar cleft conforms was clear. The effect of a mesiodens and the upper lateral incisor whether bilaterally missing, unerupted, or peg shaped was minimal.Conclusion. Etiological factors underlying maxillary midline diastema are interconnected. Using a checklist as a guide during handling maxillary midline diastema is important in the different stages of treatment.
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Aristo Lay and Shafira Kurnia Supandi. "Management of maxillary midline diastema caused by aberrant frenum attachment: A case report." World Journal of Advanced Research and Reviews 14, no. 3 (June 30, 2022): 252–55. http://dx.doi.org/10.30574/wjarr.2022.14.3.0543.

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Background: Midline diastema in the maxillary is very common aesthetics problem in mixed and early permanent dentition, one of which etiology is aberrant frenum attachment. High frenum attachment might interfere with aesthetics, plaque control, and create mucogingival deformities, therefore compromising orthodontic result and causing recurrence. Several treatments for maxillary midline diastema are available, one of which is labial frenectomy. Objective: To present a case report of frenectomy as a mean of eliminating maxillary midline diastema. Case: This is a case report of a 25 years old female patient with high frenum attachment causing maxillary midline diastema. Patient was treated with frenectomy afterward. Frenectomy is a complete removal of frenum, including the attachment to the underlying bone. Following the treatment, midline diastema closure was showed in 4 months following frenectomy. Conclusions: Frenectomy is a potential alternative for treatment of maxillary midline diastema.
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Boushell, Lee W. "Diastema." Journal of Esthetic and Restorative Dentistry 21, no. 3 (June 2009): 209–10. http://dx.doi.org/10.1111/j.1708-8240.2009.00261.x.

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Singla, Divya, Neha Stan, Sanjay Mittal, Mandeep Bhullar, Isha Aggarwal, and Rameez Hassan. "Esthetic Perception of Various Forms of Anterior Diastemas during Smiling." Dental Journal of Advance Studies 07, no. 03 (December 2019): 103–9. http://dx.doi.org/10.1055/s-0039-3402302.

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Abstract Introduction Midline diastema is a common esthetic problem in mixed and permanent dentition. It is considered attractive in some cultures and unattractive in others. Aim The aim of this study is to compare the perceptions of anterior diastema by dental students and laypersons. Materials and Methods The study was conducted on 100 undergraduate students of Bhojia Dental College (n = 50) and Bhojia Nursing College (n = 50), Himachal Pradesh, India. A self-prepared questionnaire was given, which consisted of two parts: first part had personal details (name, age, sex, knowledge of diastema) and the second part contained an edited photograph of a patient who had reported to the Department of Orthodontics, Bhojia Dental College, with the chief complaint of midline diastema. The photographs were modified by photoediting software and arranged according to the previous studies on anterior diastema by Frush and Fisher, Lombardi, and Simian. A visual analog scale with scores 1–4 (1, most attractive; 2, attractive; 3, less attractive; 4, least attractive) was used to rank these photographs by the students. Comparison between various variables was made by using chi-squared test. Results Smile attractiveness from the most to the least attractive was Simian > Frush and Fisher > Lombardi > midline diastema among both dental and nursing students. Gender and presence of diastema had no relation with the students’ perceptions (p > 0.05). Conclusion The location and width of diastema had an important role in the perception of dental diastemas. Midline diastema was a gap with most negative perception.
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Bapat, Shirish M., and Prashant Bandejiya. "Closing a Large Maxillary Median Diastema using Bapat Power Arm." International Journal of Clinical Pediatric Dentistry 10, no. 2 (2017): 201–4. http://dx.doi.org/10.5005/jp-journals-10005-1435.

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ABSTRACT Aim The aim of this study is to present a case of large maxillary median diastema closed by bodily movement of central incisors using Bapat power arm (BPA). Materials and methods After extraction of mesiodens, a power chain with a force of 120 gm was applied to BPA ligated to preadjusted edgewise brackets bonded to maxillary central incisors to move them over round steel wire for closure of resultant diastema. Bonded retainer was placed after the closure of median diastema. Results The median diastema was completely closed in 5 months period with almost bodily movement of incisors, which was confirmed by periapical X-ray. Conclusion Bapat power arm was efficient in closing diastema without any discomfort or injury and was well accepted by the patient. How to cite this article Bapat SM, Singh C, Bandejiya P. Closing a Large Maxillary Median Diastema using Bapat Power Arm. Int J Clin Pediatr Dent 2017;10(2):201-204.
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Pribadi, Nirawati, S. Sukaton, Galih Sampoerno, S. Sylvia, Hendy Jaya Kurniawan, Maya Safitri, and Rahmadanty Mustika. "The aesthetic management of a midline diastema with direct composite using digital smile design, putty index and button shade technique: A case report." Dental Journal (Majalah Kedokteran Gigi) 55, no. 1 (March 1, 2022): 44. http://dx.doi.org/10.20473/j.djmkg.v55.i1.p44-48.

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Background: A diastema is the distance or space between two or more adjacent teeth. This abnormality can interfere with the aesthetics of a patient, and 97% of diastemas occur in the maxilla. Various treatments can be performed for diastema closure in patients, one of which is composite resin restoration. Purpose: To explain the aesthetic procedure for diastema closure. Case: A 20-year-old female patient presented with complaints of the distance between her anterior teeth (Class I Angle occlusion with normal overjet and overbite). The labial frenum associated with the diastema was normal in size and position. The patient was not amenable to invasive procedures. Case Management: Management of midline diastema closure using the direct composite technique with DSD, the putty index method and button shade technique. Conclusion: The closure of a midline diastema with direct composite using DSD, the putty index method and button shade technique provides aesthetic results with less cost and time due to the absence of laboratory procedures.
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Dissertations / Theses on the topic "Diastermy"

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Sharma, Krishna. "Cation-controlled diastereo- and enantioselective synthesis of indolines : an autocatalytic process." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:bfec8a97-7740-49f9-aa8f-5b97f632c21d.

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Asymmetric phase-transfer catalysis is a powerful technique that enables a wide range of transformations under mild conditions, often using inexpensive and environmentally benign reagents. By extending the applications of phase-transfer catalysis we have developed a highly diastereo- and enantioselective synthesis of functionalized indolines bearing two contiguous stereocentres, one of which is quaternary and all carbon, in a single synthetic step. The reaction proceeds with complete diastereoselectivity and with high levels of enantioselectivity (up to 99% ee). Despite the development of phase-transfer catalysis as a primary synthetic tool in organic synthesis, the mechanistic understanding of these reactions still remains a challenge, due mainly to the difficulty of studying the complex multi-phase systems. Therefore, a further aim of this project was to understand the reaction mechanism of our phase-transfer catalysed transformation. Investigations into the mechanism of our phase-transfer catalysed reaction have been carried out by studying the reaction kinetics. These have shown that the reaction follows a sigmoidal curve with an induction period present. A detailed kinetic investigation was carried out which demonstrated that an autocatalytic mechanism is operational.
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Fargeas, Valérie. "Contribution a la synthese diastereo- et enantioselective de macrolides de type erythromycine." Paris 11, 1997. http://www.theses.fr/1997PA114805.

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Morais, Juliana Fernandes de. "Estabilidade do fechamento dos diastemas interincisivos superiores, tratados na fase de dentadura permanente." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/25/25134/tde-15042009-102736/.

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O objetivo deste estudo foi avaliar a estabilidade do fechamento dos diastemas interincisivos superiores, verificando sua correlacao com a largura inicial desses espacos, a sobressaliencia, a sobremordida e o paralelismo de raizes. A amostra foi composta por 30 pacientes com pelo menos um diastema, com largura minima de 0,77mm e media do somatorio dos tres diastemas interincisivos de 2,64mm (DP = 1,46; minimo= 0,77; maximo= 8,04). Todos os pacientes apresentavam os caninos superiores permanentes com, no minimo, a metade da coroa intrabucal. As mensuracoes foram realizadas em modelos de estudo (largura dos diastemas, sobressaliencia e sobremordida) e radiografias panorâmicas (paralelismo de raizes), obtidos nos estagios pre-tratamento, final de tratamento e, pelo menos, 2,4 anos pos-tratamento. Os resultados da analise de variancia para medidas repetidas demonstraram que a recidiva do diastema mediano foi significante (media= 0,45mm, DP= 0,66), mas foi estatisticamente menor do que sua largura inicial, e os diastemas entre os incisivos centrais e laterais permaneceram fechados, na maioria dos casos. Ocorreu recidiva do diastema mediano em 18 pacientes (60% da amostra) e 19 pacientes apresentaram reabertura de pelo menos um dos diastemas interincisivos. De acordo com a analise de regressao multipla, os unicos fatores associados a recidiva do diastema mediano foram a largura pretratamento deste espaco (p=0,000) e a alteracao da sobressaliencia durante o periodo pos-tratamento (p=0,046). Nao foi encontrada associacao entre o paralelismo de raizes e a recidiva dos diastemas interincisivos.
This study evaluated the stability of maxillary anterior diastemas closure and its association with relapse and dental casts variables (interincisor width, overjet and overbite) and also with root parallelism. Sample comprised 30 patients with at least one pretreatment anterior diastema of 0.77mm or greater after eruption of maxillary permanent canines. Data were obtained from dental casts and panoramic radiographs taken pretreatment, posttreatment and at least 2 years postretention. The sum of initial mean width of the diastemas was 2.64mm (SD=1.46, minimum=0.77). Repeated measures analysis of variance demonstrated significant relapse of median diastema (mean=0.45mm, SD=0.66) but this value was statistically slighter than its initial width, and closure of diastemas located between central incisors and lateral incisors showed great stability. Relapse of median diastema occurred in 18 cases, and 19 patients showed at least one space recurrence. Only initial diastema severity width and relapse of overjet showed association with the relapse of median diastema. There was no association between interincisor diastemas relapse and root parallelism.
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Omura, Carla Michel. "Mensuração da sobressaliência incisal e dos diastemas em potros (Equus caballus)." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/10/10137/tde-23062004-171625/.

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Este trabalho teve como objetivo principal o estudo das maloclusões dos dentes incisivos em potros da raça Quarto de Milha, incluindo a revisão de literatura dos conceitos de oclusão, maloclusão, braquignatismo, prognatismo, sobressaliência e sobremordida. Objetivou-se determinar a prevalência de sobressaliências e analisar os resultados de acordo com idade, sexo e linhagem, assim como desenvolver técnicas simples de mensurações destas sobressaliências e dos diastemas, que pudessem ser aplicadas a campo e utilizadas para acompanhamento do crescimento das regiões rostrais de maxila e da mandíbula de potros. Foram utilizados 51 potros da raça Quarto de Milha, entre quatro e sete meses de idade. Resultados: a prevalência de lesões de sobressaliência foi de 50,98%. Dentre os animais afetados, 61,54% eram fêmeas e 38,46%, machos. Os potros de linhagem de conformação apresentaram maior prevalência de sobressaliência, pois dos 26 potros afetados, 50% eram desta linhagem. Foi observado que em 100% dos potros examinados, houve diferença entre as medidas dos diastemas superiores e inferiores. Pareceu haver um pico de crescimento uniforme dos diastemas entre quatro e cinco meses de idade, e a partir de cinco meses, as diferenças entre os diastemas superiores e inferiores aumentou gradativamente. Entre os potros de quatro meses, 44,44% apresentaram sobressaliência incisal, assim como 45,45% dos onze potros de cinco meses, 58,33% dos potros de seis meses e 60% dos potros de sete meses. Os métodos empregados para a mensuração dos diastemas e das sobressaliências incisais mostraram-se eficientes. Sem estudos cefalométricos é impossível confirmar o diagnóstico de braquignatismo e determinar em que região e se realmente existe a alteração de crescimento mandibular ou maxilar.
The main goal of this dissertation was to study incisor malocclusion in Quarter Horse foals, which included literature review of the terms occlusion, malocclusion, brachygnathism, prognathism, overjet and overbite. The purpose of this experiment was to determine overjet prevalence and analyse the results according to age, sex and lineage, as well as to develop simple field techniques for measuring incisor malocclusion and diastema that could be utilized to follow-up the growth of the rostral components of maxila and mandible. For this analysis, 51 Quarter Horse foals between four and seven months old were examined. Results: the prevalence of foals presenting overjet was 50,98%. Among these, 61,54% were females and 38,46% were males. Furthermore, show lineages foals presented overjet more commonly than the other lineages, as 50% of the 26 affected foals belonged to show lineages. All of the examined foals presented dysparities between the measurements of maxilary and mandibular diastemas. It seemed that there is a peak of diastema uniform growth between the ages of four to five months, but the differences between the superior and inferior diastemas seemed to increase as the age advanced. Among the four months old foals, 44,44% were affected, as well as 45,45% of the 11 foals of five months old, 58,33% of the foals of six months old and 60% of seven months old. The developed method for measurements of the diastema was considered efficient. Overjet was found to be common among Quarter Horse foals, specially among show lineages. Without further cephalometric studies, it is impossible to confirm the diagnosis, and to determine where or if there is an abnormality in the jaw.
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Hupe, Eike. "Diastereo- und regioselektive Synthese von primären und sekundären Diorganozinkreagenzien mittels einer Bor-Zink Austauschreaktion." Diss., lmu, 2002. http://nbn-resolving.de/urn:nbn:de:bvb:19-1745.

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Fiorotti, Renata Cristina. "Utilização do laser de CO2 nas frenectomias labiais e linguais e sua relação com os fatores ortodonticos e fonatorios." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/312372.

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Orientador: Ester Maria Danieli Nicola
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
Made available in DSpace on 2018-07-29T06:06:03Z (GMT). No. of bitstreams: 1 Fiorotti_RenataCristina_M.pdf: 18141994 bytes, checksum: d0d0ff9349d3714a37f6c88903444c42 (MD5) Previous issue date: 2001
Resumo: A presença de freio anômalo, tanto labial superior como lingual, pode desencadear uma série de alterações do ponto de vista ortodôntico e fonatório. Quando é indicada a remoção cirúrgica dos freios, denominada frenectomia, o profissional dispõe de diversas técnicas convencionais padronizadas, desenvolvidas com o objetivo de melhorar os resultados clinicos e minimizar os efeitos indesejáveis, presentes em cirurgias convencionais sob anestesia local, mesmo que considerados procedimentos simples. Os principais efeitos observados nas cirurgias de tecido mole realizadas com o uso de bisturi e lâmina fria, são a dor e o sangramento que, embora de pequena intensidade, leva, na maioria das vezes, à necessidade de sutura. O manuseio cirúrgico resulta em edema pós-operatório, acompanhado ou não de hematomas e necessidade de medicação analgésica e/ou antinflamatória. Considerando que a maioria dos pacientes submetidos a este tipo de cirurgia é constituída de crianças de 3 a 8 anos de idade e que, geralmente, pouco colaboram para a realização de uma intervenção mais invasiva, é sempre desejado um procedimento mais rápido, igualmente eficiente e com um pós-operatório de melhor qualidade. O laser de C02, devido à interação com os tecidos biológicos, apresenta-se como excelente instrumento para este tipo de cirurgia, minimizando e/ou eliminando os fatores adversos citados. O presente trabalho traz ampla revisão bibliográfica sobre o assunto, explica, brevemente, a fisica do laser e sua interação com os tecidos biológicos, propõe e padroniza uma técnica para realização de frenectomias labiais e linguais, descrevendo a relação destes freios com as funções ortodônticas e fonoarticulatórias, salientando a importância de um tratamento precoce. A técnica cirúrgica com laser de C02, bem como a indicação e as vantagens para cada uma das situações, serão apresentadas na forma de dois trabalhos independentes
Abstract: The presence of an anomalous frenum, either labial or lingual, can promote many orthodontics and/or speech disorders. When the surgery, so called frenectomv, is done, the professionals have a lot of conventional and standardized techniques that were developed to obtain better clinical results and reduce the effects of the surgery, that although simple, presents all the effects of any small conventional surgery, under local anesthesia. The main effects observed in soft tissue surgeries with scalpel are pain and bleeding which, even present in low intensity, needs suture. The tissue manipulation results in post-operative edema, with or without hematoma and requires analgesic and antinflammatory medication. Considering that the majority of patients submitted to frenectomy are children 3-8 years old which , usually, do not co-operated with the surgery, a quick and efficient procedure, with better post-operative sintoms is always desired. The CO2 laser, through its biologic tissue interaction, is an excellent instrument to this type of surgery, reducing and/or eliminating the adverse factors. The present work shows a large bibliographical revision about the frenum, explains shortly the laser physics, propose and standardize a technique to lingual and labial frenectomies. It also discuss the frenum relationship with orthodontic and speech function, emphasizingthe advantages of early treatment. The surgical technique with CO2 laser, as well as the indication and advantages of each situation, will be presented as 03 independent articles
Mestrado
Ciencias Biomedicas
Mestre em Ciências Médicas
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Schaadt, Annette. "Untersuchungen zur diastereo- und enantioselektiven Synthese von Matsuon und asymmetrische Synthese von anti-1,2-Sulfanylaminen." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964910934.

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Pierau, Sabine. "Neue Methoden zur diastereo- und enantioselektiven Synthese von 8-oxabicyclo(3.2.1)oct-6-en-3-onen." [S.l. : s.n.], 1997. http://deposit.ddb.de/cgi-bin/dokserv?idn=954430662.

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DORIZON, PHILIPPE JACQUES YVES. "Nouvelles strategies de syntheses diastereo- et enantioselectives des (1s,2s) 2,3-methanoaminoacides naturels et non naturels." Paris 11, 1998. http://www.theses.fr/1998PA112343.

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Le travail presente dans ce memoire concerne la synthese diastereo-et enantioselective des 2,3-methanoaminoacides naturels et non naturels, de configuration (1s,2s). La preparation de ces composes a ete realisee par transfert de chiralite a partir d'un substrat naturel et asymetrique issu : le l-lactate d'ethyle. La premiere partie decrit une nouvelle voie d'acces aux derives des 2-vinylcyclopropanecarbonitriles racemiques hautement fonctionnalises, precurseurs des 2,3-methanoaminoacides et autres produits naturels. Ils sont obtenus diastereoselectivement et avec de bons rendements chimiques par des reactions en tandem d'alkylation et de cyclisation catalysees par le palladium(0). Les syntheses asymetriques ont ete effectuees a partir, soit : - d'un derive chiral non racemique du 1,4-dichlorobut-2-ene, - d'un catalyseur asymetrique, - d'une imine chirale non racemique derivee de la 2-hydroxy-3-pinanone. Aucune de ces strategies de syntheses n'a pu etre totalement enantioselective. Dans la deuxieme partie, nous proposons l'etude de la stereoselectivite des reactions en tandem a partir d'un complexe -allylique de palladium modelise et minimise par calculs de mecanique moleculaire. Nous avons mis en evidence, par une etude chimique, la reversibilite de la cyclisation, catalysee par le palladium(0), conduisant alors a une epimerisation. Une nouvelle voie d'acces tres generale aux 2,3-methanoaminoacides est proposee dans la troisieme partie de ce memoire. La cyclisation interne est realisee par une reaction intramoleculaire dans les conditions de mitsunobu a partir d'un alcool allylique asymetrique derive du l-lactate d'ethyle, compose naturel, commercial et abondant. Une excellente diastereoselectivite et un parfait transfert de chiralite ont ete obtenus par cette methodologie et ont permis la synthese asymetrique de l'acide (1s,2s) homocoronamique. La generalisation de cette methode a ete abordee et partiellement realisee.
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Poblete, Pérez Andrea Alejandra. "Prevalencia de diastemas interproximales y su asociación con sacos periodontales en caballos criollos beneficiados en la comuna de Quilpué, Región de Valparaíso, Chile." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/168224.

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Memoria para optar al Título Profesional de Médico Veterinario
Los diastemas (separaciones patológicas entre dientes) y la enfermedad periodontal son unas de las afecciones más dolorosas en la cavidad oral equina, ambos de carácter crónico y progresivo, por lo que el reconocimiento temprano, en un examen físico rutinario por parte de un médico veterinario dedicado a equinos, es fundamental. El objetivo de este estudio fue asociar ambas entidades para facilitar el diagnóstico de enfermedad periodontal, pesquisando la presencia de diastemas. Se realizaron periodontogramas y se registraron diastemas y alimento retenido entre dientes, en 200 cabezas de caballo criollo mayores a 5 años beneficiados en una planta faenadora en Quilpué (Valparaíso, Chile), encontrándose una prevalencia de 81,5% de animales con diastemas, con una media de 2,1 diastemas por animal, y una prevalencia de 54% de caballos afectados por enfermedad periodontal. El 70% de los diastemas presentaba alimento retenido en el espacio. La mayoría de los diastemas se encontraron entre molares y premolares de maxila. La literatura describe prevalencias de diastemas entre 1 y 85% y de enfermedad periodontal entre 30 y 60%, pero las muestras en edad, raza, manejo y procedencia difieren con el presente estudio y entre las investigaciones publicadas. Para estudiar asociación se trabajó con test de Chi cuadrado (y sus correcciones si correspondía) y Odds Ratio, con nivel de significancia de p < 0,05, e IC 95%. Se encontró una asociación estadísticamente significativa entre diastemas y enfermedad periodontal, y entre diastemas con enfermedad periodontal y retención de alimento en el espacio. Los caballos con diastema tienen 8,64 veces más riesgo de presentar enfermedad periodontal que aquéllos que no los tienen, y el riesgo es mayor 171,22 veces de que si una unión interproximal se encuentra diastemada de forma patológica, presente enfermedad periodontal. Un diastema con enfermedad periodontal presenta 13,92 veces más riesgo de presentar alimento retenido en el espacio que un diastema sin este signo. Se observa que existe una asociación estadísticamente significativa entre sexo y presencia de diastemas, pero no entre sexo y presencia de enfermedad periodontal. La muestra utilizada es restringida, pero se establece una base para nuevas líneas de investigación donde se evalúe la prevalencia y asociación estudiadas en este trabajo, según la edad individual de los caballos, su actividad deportiva, raza y alimentación entre otras.
Diastemata (pathological gaps between teeth) and periodontal disease -both chronic and progressive- are two of the most painful conditions in the equine oral cavity. Therefore, early recognition of these conditions in a routine oral check up by an equine veterinarian is essential. The aim of this study was to associate both conditions to facilitate the diagnosis of periodontal disease, by looking for the presence of diastemata. Periodontograms were performed and diastemata and food packed between teeth were examined and recorded in 200 heads of mixed breed horses older than 5 years in a slaughterhouse in Quilpué (Valparaíso, Chile). 81.5% of animals were affected with diastemata, with an average of 2.1 diastemata per animal, mostly found between maxillary molars and premolars. A prevalence of 54% of horses affected by periodontal disease was found. 70% of diastemata presented food packed in the gap. Literature describes prevalence of diastemata between 1 and 85% and of periodontal disease between 30 and 60%, but the animals used in this study differ from those in published research in age, breed, handling and origin among others. To study the association, Chi square test (and its corrections, if applicable) and Odds Ratio, with significance level of p < 0.05, and 95% CI, were used. A statistically significant association was found between diastemata and periodontal disease, and between diastemata with periodontal disease and food packing in the gap. Horses with diastemata have 8.64 times more chances of having periodontal disease, compared to those without diastemata, and the risk of periodontal disease in an interproximal junction is 171.22 times greater if it is pathologically diastemated. Chances of finding food packed in the gaps are 13.92 times greater when the diastema also presents periodontal disease. A statistically significant association was noticed between the sex and the presence of diastemata, but not between the sex and periodontal disease. The sample used is limited, but it establishes a basis for new branches of research where the prevalence and association analyzed in this study could be evaluated on horses, according to their individual age, sports activity, breed and feeding among others.
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Books on the topic "Diastermy"

1

Scottish military diasters. Glasgow: Neil Wilson Pub., 2008.

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Erdemir, Ugur, and Esra Yildiz, eds. Esthetic and Functional Management of Diastema. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-24361-0.

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Clark, Derek Henry. Postmortem dental identification in mass diasters. London: University of London, 2003.

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Uschkarath, Nicole. Mechanismus und Diastereo- bzw. Enantioselektivitaẗ bei Ti(+2)-vermittelten Pinakol-Kupplungen. Aachen: Mainz, 1999.

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Korbicz, Józef. Modeling, Diagnostics and Process Control: Implementation in the DiaSter System. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2011.

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Perilous seas: Exciting true stories about diasters and heroism on and under the sea. Wellington, N.Z: Bateson Pub., 2009.

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Makrēs, Dēmētrēs I. Organōsē kai epitachynsē tēs ennomēs prostasias sto symvoulio tēs epikrateias kata to diastēma tōn etōn 1990-2002. Athēna: Ekdoseis Ant. N. Sakkoula, 2004.

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Jean, Bowman, and Jeroski Sharon, eds. Ecozone: How do our actions affect the natual world? ; Survive! : how do people survive natural diasters? Toronto: Pearson Education Canada, 2008.

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author, Glaspey Terry, ed. Relentless: Pursuing a life that matters. Springfield, Missouri: Influence Resources, 2013.

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Grote, JoAnn A. The great mill explosion. Uhrichsville, Ohio: Barbour Pub., 1998.

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Book chapters on the topic "Diastermy"

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Hammond, Barry D., Kevin B. Frazier, Anabella Oquendo, and Ronald E. Goldstein. "Restorative Treatment of Diastema." In Ronald E. Goldstein's Esthetics in Dentistry, 840–74. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119272946.ch26.

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Yildiz, Esra, Taner Yucel, Ugur Erdemir, Derya Germec Cakan, and Korkmaz Sayınsu. "Definition and Causes of Diastema." In Esthetic and Functional Management of Diastema, 5–16. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24361-0_2.

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Kościelny, Jan Maciej, Michał Syfert, and Paweł Wnuk. "Introduction to the DiaSter System." In Modeling, Diagnostics and Process Control, 15–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16653-2_2.

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Syfert, Michał, Paweł Chrzanowski, Bartłomiej Fajdek, Maciej Ławryńczuk, Piotr Marusak, Krzysztof Patan, Tomasz Rogala, et al. "Application of the DiaSter System." In Modeling, Diagnostics and Process Control, 295–367. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16653-2_7.

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Erdemir, Ugur, and Esra Yildiz. "Introduction." In Esthetic and Functional Management of Diastema, 1–4. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24361-0_1.

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Yildiz, Esra, Taner Yucel, Ugur Erdemir, and Korkud Demirel. "Treatment Planning." In Esthetic and Functional Management of Diastema, 131–40. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24361-0_10.

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Cakan, Derya Germec, and Korkmaz Sayınsu. "Treatment Options, Timing and Sequencing: Orthodontics." In Esthetic and Functional Management of Diastema, 141–68. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24361-0_11.

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Erdemir, Ugur, Taner Yucel, and Esra Yildiz. "Treatment Options, Timing and Sequencing: Direct-Indirect Restorative Treatment." In Esthetic and Functional Management of Diastema, 169–83. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24361-0_12.

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Yucel, Taner, Esra Yildiz, and Ugur Erdemir. "Material Selection: Restorative Materials." In Esthetic and Functional Management of Diastema, 185–96. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24361-0_13.

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Yildiz, Esra, Taner Yucel, Ugur Erdemir, Korkmaz Sayinsu, Derya Germec Cakan, and Korkud Demirel. "Cases: Applications." In Esthetic and Functional Management of Diastema, 197–222. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24361-0_14.

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Conference papers on the topic "Diastermy"

1

Couture,, Axel, Pierre Grandclaudon, Stéphane Lebrun, and David Dumoulin. "Stereoselective Synthesis of Previously Unattainable Enantio(diastereo)enriched Bridged Tetrahydro-2-benzazepines." In The 14th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2010. http://dx.doi.org/10.3390/ecsoc-14-00408.

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VANESSA FIGUEIREDO DOS SANTOS, RUBIA, Vania Célia Vieira de Siqueira, and MARIA BEATRIZ B A MAGNANI. "A incidência do diastema interincisivos centrais superiores em jovens na dentição mista." In XXIV Congresso de Iniciação Científica da UNICAMP - 2016. Campinas - SP, Brazil: Galoa, 2016. http://dx.doi.org/10.19146/pibic-2016-50855.

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Samaad, Tooba, Ghalib Ahmed Tahir, Mansoor-ur-Rahman, and Murtaza Ashraf. "Comparative Performance Analysis Between Agent-Based And Conventional Diaster Management System." In 2018 International Conference on Smart Computing and Electronic Enterprise (ICSCEE). IEEE, 2018. http://dx.doi.org/10.1109/icscee.2018.8538363.

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