Academic literature on the topic 'Maxillary deficiency'
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Journal articles on the topic "Maxillary deficiency"
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Loriato, Lívia, and Carlos Eduardo Ferreira. "Surgically-assisted rapid maxillary expansion (SARME): indications, planning and treatment of severe maxillary deficiency in an adult patient." Dental Press Journal of Orthodontics 25, no. 3 (May 2020): 73–84. http://dx.doi.org/10.1590/2177-6709.25.3.073-084.bbo.
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ABSTRACT Introduction: Maxillary deficiency, also called transverse deficiency of the maxilla, may be associated with posterior crossbite, as well as with other functional changes, particularly respiratory. In adult patients, because of bone maturation and the midpalatal suture fusion, rapid maxillary expansion has to be combined with a previous surgical procedure to release the areas of resistance of the maxilla. This procedure is known as surgically-assisted rapid maxillary expansion (SARME). Objective: This study discusses the indications, characteristics and effects of SARME, and presents a clinical case of transverse and sagittal skeletal maxillary discrepancy treated using SARME and orthodontic camouflage.
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McNamaraa, James A. "Maxillary transverse deficiency." American Journal of Orthodontics and Dentofacial Orthopedics 117, no. 5 (May 2000): 567–70. http://dx.doi.org/10.1016/s0889-5406(00)70202-2.
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Kita, Hiroki, Shoko Kochi, Yoshimichi Imai, Atsushi Yamada, and Tai Yamaguchi. "Rigid External Distraction Using Skeletal Anchorage to Cleft Maxilla United with Alveolar Bone Grafting." Cleft Palate-Craniofacial Journal 42, no. 3 (May 2005): 318–26. http://dx.doi.org/10.1597/03-152.1.
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Objective Documentation of the application of maxillary distraction osteogenesis using rigid external distraction (RED) with skeletal anchorage combined with predistraction alveolar bone grafting (ABG) in cleft maxilla. Design Case report. Patient A patient with numerous congenital missing teeth and severe maxillary deficiency related to complete bilateral cleft lip and palate with large alveolar bone defect. Intervention The patient received preoperative orthodontic treatment, predistraction ABG, and maxillary distraction osteogenesis using RED with skeletal anchorage. Results Predistraction ABG completely united the cleft maxilla. The united maxilla was successfully advanced by the RED system with skeletal anchorage, despite unsound dentition with numerous congenital missing teeth. Conclusion The present study demonstrates that the combination of predistraction ABG and RED system with skeletal anchorage is effective for the treatment of severe maxillary deficiency related to complete bilateral cleft lip and palate with large bone defect and numerous congenital missing teeth.
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Quinzi, Vincenzo, Vincenzo Ronsivalle, Vincenzo Campanella, Leonardo Mancini, Salvatore Torrisi, and Antonino Lo Giudice. "New Technologies in Orthodontics: A Digital Workflow to Enhance Treatment Plan and Photobiomodulation to Expedite Clinical Outcomes." Applied Sciences 10, no. 4 (February 21, 2020): 1495. http://dx.doi.org/10.3390/app10041495.
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Background: The transversal maxillary deficiency represents one of the most frequent skeletal discrepancies of the craniofacial region. The analysis of morphological characteristics of the maxilla can be detrimental for a correct diagnosis and treatment plan. Methods: This paper shows a user-friendly digital workflow involving mirroring, superimposition, and the deviation analysis of 3D models of the maxilla in order to identify the presence of symmetry/asymmetry of the palatal vault. Such information can be helpful to clinicians in order to design an appropriate orthodontic appliance for the treatment of transversal maxillary deficiency. We also describe a case report of a seven-year-old female affected by mild transversal maxillary deficiency associated with anterior openbite. The appliance is designed after a comprehensive evaluation of the morphology of the maxilla performed by using the presented diagnostic digital workflow. Additionally, the orthodontic treatment is assisted by photobiomodulation sessions that expedite the achievement of clinical outcomes.
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Andrucioli, Marcela Cristina Damião, and Mírian Aiko Nakane Matsumoto. "Transverse maxillary deficiency: treatment alternatives in face of early skeletal maturation." Dental Press Journal of Orthodontics 25, no. 1 (January 2020): 70–79. http://dx.doi.org/10.1590/2177-6709.25.1.070-079.bbo.
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ABSTRACT Transverse deficiencies should be a priority in orthodontic treatment, and should be corrected as soon as diagnosed, to restore the correct transverse relationship between maxilla and mandible and, consequently, normal maxillary growth. Corrections may be performed at the skeletal level, by opening the midpalatal suture, or by dentoalveolar expansion. The choice of a treatment alternative depends on certain factors, such as age, sex, degree of maxillary hypoplasia and maturation of the midpalatal suture. Thus, the present study discusses different treatment approaches to correct maxillary hypoplasia in patients with advanced skeletal maturation.
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Islam, Md Sayeedul, and Md Zakir Hossain. "The nonsurgical Orthodontic correction of a Class III malocclusion Case report." Bangladesh Journal of Orthodontics and Dentofacial Orthopedics 3, no. 1 (July 4, 2015): 38–41. http://dx.doi.org/10.3329/bjodfo.v3i1.24000.
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This is a case report of a patient with a skeletal Class III malocclusion and maxillary arch deficiency. The patient was treated without extraction or surgery by increasing the maxillary arch length. Protraction of the maxillary complex and A point was the result. Favorable growth of both the maxilla and the mandible resulted in a functional Class I occlusion and an improved skeletal relationship.Ban J Orthod & Dentofac Orthop, October 2012; Vol-3, No.1
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Deniz, Yeşim, and Semiha Arslan. "Is there a relationship between transverse maxillary deficiency and sella turcica: A cephalometric analysis study?" APOS Trends in Orthodontics 11 (July 9, 2021): 116–22. http://dx.doi.org/10.25259/apos_172_2020.
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Objectives: The aim of this study was to investigate the dimensions and morphological variations of sella turcica and to test whether a relationship exists between sella turcica and transverse maxillary deficiency. Materials and Methods: The cephalometric radiographs of patients older than 17.99 years, which have been taken before the orthodontic treatment, and patient records were analyzed to investigate sella turcica dimensional and morphological analysis. Linear measurements of sella are as follows sella length, sella width, sellar area, sella height anterior, posterior, and median. The sella turcica morphological shape analysis was performed into six groups (normal sella turcica, oblique anterior wall, sella turcica bridge, double contour of floor, irregularities of the posterior part of the dorsum sella, and pyramidal shape of the dorsum sella). The width of the maxillary arch is measured by the digital caliper. Male participants with a maxillary width of less than 30.8 mm and a maxillary width of less than 31.1 mm in female patients in the first molar region were determined as a transverse maxillary deficiency. The mean dimensions of sella turcica and the relationship between cases with transverse maxillary deficiency and non-skeletal anomaly were compared using independent samples t-tests. The transverse maxillary deficiency and the sellar morphology relationship were compared using Chi-square test. Post hoc multiple comparisons and analyzes were performed at 95% confidence interval by Bonferroni correction. Results: The sella length measurements yielded higher values among the patients with transverse maxillary deficiency (P < 0.05). The normal sella morphology had quantitative superiority in patients without skeletal anomaly in comparison with transverse maxillary deficiency cases (P < 0.05). It was observed that the sella turcica bridge had a statistically superiority in patients with transverse maxillary deficiency (P < 0.05). Conclusion: The increased sellar measurement and sella turcica bridging, may provide knowledge about possible transverse maxillary deficiency.
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Oslavsky, A., and T. Oslavskaya. "Experience of using the apparatus "M.S.E." with transversal deficiency of the maxillary complex." SUCHASNA STOMATOLOHIYA 104, no. 5 (2020): 74–80. http://dx.doi.org/10.33295/1992-576x-2020-5-74.
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Annotation. The successful treatment of dentoalveolar malocclusion, namely the narrowing of the maxilla, is considered one of the very important stages of orthodontic treatment. This article describes a technique for expanding the maxillary complex, namely skeletal expansion using the M.S.E. apparatus. The apparatus itself is described in detail, the methods for determining where and how much the maxillary should be expanded, the landmarks due to which skeletal expansion will occur. The protocol for activating the device is also given.
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Gill, D., F. Naini, M. McNally, and A. Jones. "The Management of Transverse Maxillary Deficiency." Dental Update 31, no. 9 (November 2, 2004): 516–23. http://dx.doi.org/10.12968/denu.2004.31.9.516.
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Markana, Kinnari. "MODERN PERSPECTIVES ON RAPID PALATAL EXPANSION." International Journal of Advanced Research 9, no. 5 (May 31, 2021): 497–500. http://dx.doi.org/10.21474/ijar01/12864.
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Maxillary deficiency in the transverse dimension is a common problem in children. The conventional management of such malocclusion is with conventional rapid maxillary expansion. The beneficial effects of such an orthodontic therapy are explained in detail in the literature. But there are also negative effects of conventional rapid maxillary expansion. Thus, the improvements in the methods of expansion has led to discovery of miniscrew assisted rapid palatal expansion. The miniscrew assisted rapid palatal expansion are supported by mini implants and thus enable better skeletal expansion of maxilla. This article will discuss the favourable effects, negative effects, and clinical uses of conventional and miniscrew assisted rapid palatal expansion.
Dissertations / Theses on the topic "Maxillary deficiency"
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Santana, Denise Meira de Castro. "A expansão rápida da maxila é efetiva a longo prazo nas dimensões das vias aéreas e na respiração em crianças com distúrbios respiratórios?" Botucatu, 2020. http://hdl.handle.net/11449/192286.
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Orientador: Silke Anna Theresa WeberResumo: Introdução: O crescimento craniofacial é modificado pela respiração oral crônica. A expansão rápida da maxila (ERM) promove a separação da sutura palatino mediana, melhorando a oclusão e a dimensão da via aérea superior. Objetivo: Avaliar a efetividade terapêutica da ERM em crianças com respiração oral e distúrbios respiratórios a longo prazo, em relação à melhora no padrão respiratório e classificar a qualidade da evidência das informações. Método: Foi realizada a busca nas plataformas PUBMED, LILACS, EMBASE, SCOPUS, WEB OF SCIENCE e COCHRANE, bem como a literatura cinza. Os artigos foram selecionados e avaliados quanto aos riscos de viés (ROBINS-I) e feita a avaliação da qualidade da evidência (GRADE). Resultados: De 309 estudos encontrados, 26 artigos foram selecionados para leitura completa, dos quais 22 foram excluídos, restando quatro artigos para análise e compilamento dos dados, sendo dois ensaios clínicos não-randomizados controlados e dois ensaios clínicos não-randomizados e não-controlados. Nenhum ensaio clínico randomizado foi encontrado. Conclusões: As meta-análises mostraram aumento de distância internasal, interzigomática e volume orofaríngeo após a ERM. A qualidade da evidência de cada desfecho foi considerada muito baixa. Palavras-chave: Crianças, Expansão rápida da maxila, Deficiência maxilar transversa, Respirador bucal, meta-análise.
Abstract: Introduction: The craniofacial growth is modified by the chronic oral breathing. The maxillary rapid expansion promotes the separation of the median palatal suture, improving the occlusion and the dimensions of the upper airways. Aim: To evaluate the therapeutic effectiveness of RME in children with oral breathing and long-term respiratory disorders, in relation to the improvement in breathing pattern and to classify the quality of evidence of information. Methods: Searches on PUBMED, LILACS, EMBASE, SCOPUS, WEB OF SCIENCE and COCHRANE, as well as in the grey literature were performed. The works found were selected and evaluated for Risk of Bias (ROBINS-I), and the evaluation of quality of evidence (GRADE). Results: From 309 works found, 26 papers were selected for full reading, from it 22 were excluded. Data compilation and analysis were performed in four papers, being two controlled non-randomized clinical trials and two non-randomized and uncontrolled clinical trials. No randomized clinical trial was found. Conclusions: The meta-analyses found an increase of the internasal, interzygomatic distance and oropharyngeal volume after the RME. The quality of the evidence of each outcome was considered very low. Keywords: child, Maxillary Rapid Expansion, transverse maxillary deficiency, meta-analyses; mouth breather.
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Yamaji, Marco Aurélio Kenichi. "Avaliação das dimensões transversal, vertical e anteroposterior em tomografias computadorizadas do feixe cônico de pacientes com deficiência maxilar transversal submetidos à expansão rápida de maxila assistida cirurgicamente." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/58/58136/tde-11122014-143322/.
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O objetivo deste estudo foi uma avaliação tridimensional as mudanças nas dimensões transversais, verticais e anteroposterior das estruturas dentais e dentoalveolares em pacientes com deficiência maxilar transversal (DMT) submetidas à expansão rápida de maxila assistida cirurgicamente (ERMAC) através do uso de tomografias computadorizadas do feixe cônico (TCFC). Trinta e oito pacientes com DMT foram submetidos à ERMAC sob anestesia geral, as TCFC foram realizadas no pré-operatório (T1), após a expansão desejada (T2) e seis meses após a expansão (T3). Quarenta e sete marcações tridimensionais foram realizadas como pontos de referência e marcadas em cada tempo. As distâncias e ângulos foram medidas a fim de se avaliar as alterações ocorridas após a expansão. Os resultados demonstraram diferenças estatísticas significantes na dimensão transversal através do teste ANOVA ao nível da câmara pulpar (P≤0.001) em T2-T1 e T3-T1; e ao nível do ápice dental com diferença estatisticamente significante (P<0.005) em T2-T1 e T3-T1 e ao nível do processo dentoalveolar com diferença estatísticamente significante de (P<0.05) em T2-T1e T3-T1. A inclinação dentária apresentou diferença estatísticamente significante somente no incisivo central esquerdo (P< 0.05) em T3-T1. As dimensões vertical e anteroposterior não apresentaram diferenças estatísticamente significante. As maiores mudanças ocorreram na dimensão transversal na maioria das estruturas avaliadas, alterações verticais e anteroposteriores não foram encontradas. O índice de recidiva após seis meses da realização da ERMAC é baixa e podemos considerar como um tratamento estável para pacientes com DMT.The objective of this study was evaluate three-dimensional changes on transversal, vertical and anteroposterior dimensions of dental and dentoalveolar structures in patients with maxillary transverse deficiency (MTD) submitted to surgically assisted rapid maxillary expansion (SARME) using by CBCT. Thirty eight subjects with MTD was submitted to SARME under general anesthesia, CBCTs was taken preoperative (T1), after desired expansion (T2) and six months after expansion (T3). Fourth seven three-dimensional landmarks were determinate as reference points and marked at each time. The distances and angles were measured regarding the changes occurred after expansion.The results showed statistical significance difference in transverse dimension by ANOVA test at level of pulp chamber (P≤0.001) at T2-T1 and T3-T1; at level of dental apex had statistical difference (P<0.005) at T2-T1 and T3-T1, at level of dentoalveolar processes had statistical difference (P<0.05) at T2-T1 and T3-T1. Dental tipping showed statistical difference only left central incisors (P< 0.05) at T3-T1 Vertical and anteroposterior dimensions do not have statistical difference. The greater changes occurred in transversal dimensions and most of structures evaluated, no vertical and anteroposterior changes were found. The index relapse after six months is low and SARME can be consider stable to treatment of MTD.
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Neto, Victor Tieghi. "Avaliação por meio de tomografia computadorizada por feixe cônico dos efeitos dento-esqueléticos da expansão de maxila cirurgicamente assistida em pacientes adultos." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/25/25149/tde-03092013-152310/.
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A deficiência transversal de maxila caracteriza-se por mordida cruzada posterior uni ou bilateral, dentes apinhados e/ou rotacionados, além de palato ogival; seu tratamento, em indivíduos adultos, é a expansão cirurgicamente assistida de maxila (EMCA). Tal procedimento possui efeitos não somente esqueléticos, mas também nos dentes (especialmente os que servem de apoio do aparelho expansor), cavidade e espaço aéreo nasal, lábio e demais tecidos moles circunjacentes. O objetivo deste estudo foi avaliar, por meio da tomografia computadorizada de feixe cônico (TCFC), as alterações dento-esqueléticas de indivíduos portadores atresia de maxila e submetidos à expansão cirurgicamente assistida de maxila. Para isso, 14 indivíduos foram submetidos à TCFC pré e pós (15, 60 e 180 dias) expansão cirurgicamente assistida de maxila pela técnica da osteotomia Le Fort I subtotal, e nestas realizamos mensurações da espessura da cortical óssea vestibular e palatina, além de angulação do longo eixo dos dentes posteriores superiores (1oM, 2oM, 1oPM e 2oPM). Os dados foram tabulados e analisados estatisticamente. Os resultados mostraram alterações na espessura óssea vestibular e palatina nas áreas analisadas, o que permitiu concluir que nos procedimentos de EMCA, mesmo realizando a disjunção pterigomaxilar, ocorre movimentação dentária no sentido do movimento expansivo, e que a movimentação dentária pode ser traduzida por deslocamento e inclinação vestibular. Além disso, concluiu-se que quando o deslocamento e inclinação dentária vestibular ocorreram, estas parecem ter sido acompanhadas por reabsorção da cortical vestibular e neoformação óssea na cortical palatina.Maxillary transversal deficiency is characterized by unilateral or bilateral posterior cross-bite, crammed and rotated teeth, and narrow palate, and its treatment is surgically assisted maxillary expansion for adult patients. This procedure affects not only bones, but also the teeth (especially the post of the expander device), nasal cavity and air space, lips, and surrounding soft tissues. The aim of the present study was to evaluate dento-skeletal alterations of patients presenting atrophic maxilla who underwent surgically assisted maxillary expansion using cone beam computed tomography (CBCT). For this, 14 patients underwent CBCT before and after (15, 60 and 180 post-operative days) surgically assisted maxillary expansion by subtotal Le Fort I osteotomy,and the thickness of buccal and palatal cortical bones and the angulation of the long axis of the upper posterior teeth (1 M, 2 M, 1 PM and 2 PM) were measured. Data were statistically analyzed. Results showed changes in thickness of buccal and palatal cortical areas analyzed, which allowed us to conclude that EMCA, even though using surgical techniques, teeth can be translated by displacement and buccal inclination. Furthermore, it was concluded that when the shift occurred and buccal tooth inclination, these seem to have been accompanied by buccal cortical bone resorption and bone formation in the cortical palate.
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Rodrigues, Vitor Hugo Leite de Oliveira. "Avaliação tridimensional das vias aéreas de pacientes submetidos à expansão maxilar cirurgicamente assistida." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/25/25149/tde-16072014-140053/.
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Neste estudo comparamos o volume dos seios maxilares dos pacientes submetidos à expansão rápida de maxila cirurgicamente assistida (EMCA), por meio da tomografia computadorizada de feixe cônico (TCFC). Foram avaliados 10 pacientes submetidos a expansão rápida de maxila cirurgicamente assistida (EMCA) pela técnica da osteotomia Le Fort I subtotal, que possuíam tomografias pré e pós-operatórias de 180 dias. As imagens foram analisadas utilizando software Dolphin Imaging® (versão 11.0.03.32) que permite a avaliação do espaço aéreo, delimitando-se áreas de interesse e realizando o calculo do volume correspondente. As imagens dos seios maxilares direito (SMD) e esquerdos (SME) foram analisadas nas tomografias pré e pós-operatórias. A média das medidas de volume foi de 13,760mm³ para o SMD e 14,499mm³ no SME, nas imagens pré-operatórias e de 14,779mm³ para o SMD e 14,435mm³ para o SME, nas pós-operatórias. Os volumes pré e pós-operatórios foram avaliados estatisticamente através do teste t pareado para significância maior que 0,05. Após as cirurgias, a média de volume dos SMD apresentou um aumento significante. Este aumento também foi observado nos SME, porem não foi estatisticamente significante. A partir destes resultados, é possível concluir que existe influencia da EMCA sobre o volume dos seios maxilares.The aim of this study was to compare the volume of the maxillary sinuses of patients undergoing surgically assisted rapid maxillary expansion (SARME), by cone beam computed tomography (CBCT). Were evaluated 10 patients submitted to surgically assisted rapid maxillary expansion (SARME) by the technique of subtotal Le Fort I osteotomy, which had pre and postoperative CT scans of 180 days. The images were analyzed using Dolphin Imaging® (version 11.0.03.32) software that enables the assessment of airspace, delimiting up areas of interest and performing the calculation of the corresponding volume. The images of the right maxillary sinus (RMS) and left (LMS) were analyzed in the pre -and postoperative CT scans. The average measure of volume was 13.760mm³ for the RMS and 14.49mm³ in the LMS, for the preoperative images and 14.779mm³ for the RMS and 14.435mm³ for the LMS, in postoperative. The pre-and postoperative volumes were evaluated statistically by the \"t\" test. After surgery, the mean volume of RMS showed a significant increase. This increase was also observed in LMS, however it was not statistically significant. From these results, we conclude that there SARME influence on the volume of the maxillary sinuses.
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Salgueiro, Daniel Gomes. "Avaliação da expansão de maxila cirurgicamente assistida (EMCA) por meio da tomografia computadorizada de feixe cônico." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/25/25149/tde-17102014-170616/.
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O objetivo deste estudo foi avaliar por meio da tomografia computadorizada de feixe cônico (TCFC) o padrão de abertura e o processo de neoformação óssea da sutura intermaxilar em pacientes submetidos à expansão de maxila cirurgicamente assistida (EMCA). Foram avaliados 14 indivíduos submetidos à expansão de maxila cirurgicamente assistida (EMCA) pela técnica da osteotomia Le Fort I subtotal utilizando tomografia computadorizada de feixe cônico (TCFC) nos períodos préoperatório e pós-operatório de 15, 60 e 180 dias. A partir da observação do padrão de abertura da sutura intermaxilar, após a cirurgia, pôde-se classificá-la nos tipos I e II. O Tipo I corresponde à abertura da sutura intermaxilar desde a espinha nasal anterior até a espinha nasal posterior, o Tipo II, à abertura desde a espinha nasal anterior até a sutura transversal palatina. Este padrão foi relacionado à técnica cirurgica, idade do paciente e tipo de aparelho expansor. As médias de densidade da óssea na região da sutura intermaxilar foram comparadas entre os períodos estudados (pré e pós-operatório de 15, 60 e 180 dias) para acompanhar a neoformação óssea. Os dados foram tabulados e submetidos à análise estatística. Os resultados mostraram a ocorrência do padrão de abertura tipo I em 12 indivíduos e o padrão tipo II em 2 indivíduos. A média de densidade óssea encontrada no período pós-operatório de 180 dias (PO 180) foi de 49,9% em relação a media do período pré-operatório (Pré). Concluiu-se que o padrão de abertura da sutura intermaxilar está mais relacionado à idade do paciente, que nesse estudo foi de 23,9 anos para o tipo I e 33,5 anos, para o tipo II, e à técnica cirúrgica empregada e que ao final do período de contenção estudado (PO 180) não foi possível observar a total neoformação óssea na região da sutura intermaxilar.The aim of this study was to evaluate using cone beam computed tomography (CBCT) the opening pattern and process of bone formation in the intermaxillary suture in patients with transverse maxillary deficiency undergone surgically assisted rapid maxillary expansion (SARME). Fourteen patients were evaluated whom submitted to surgically assisted maxillary expansion (SARME) by the technique of subtotal Le Fort I osteotomy using beam computed tomography (CBCT) in the preoperative and postoperative periods of 15, 60 and 180 days. From the observation of the opening pattern of the intermaxillary suture, after surgery, were classifie in types I and II. Type I corresponds to the opening of the intermaxillary suture from the anterior nasal spine to posterior nasal spine, and Type II corresponds to opening from the anterior nasal spine to the transverse palatine suture. This pattern was related to surgical technique, patient age and type of expander device. The average density of the bone in the region of the intermaxillary suture were compared between the studied periods (pre-and postoperative 15, 60 and 180 days) to evaluate bone formation. Data were tabulated and analyzed statistically. The results showed the occurrence of the opening pattern type I in 12 subjects and the standard type II in 2 individuals. The mean value of density found in the postoperative period of 180 days (PO 180) was 49.9% compared to the mean of the preoperative (Pre). It was concluded that the pattern of opening the intermaxillary suture is related to patients age, that was 23,9 years in type I and 33,5 years in type II and the surgical technique, furthermore, at the end of the retention period studied (PO 180) was not possible to observe the complete bone formation in the region of the intermaxillary suture.
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Gonçales, Andrea Guedes Barreto. "Estudo comparativo dimensional tomográfico do côndilo mandibular de indivíduos com deficiência transversal de maxila." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/25/25149/tde-19062015-155836/.
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A deficiência transversal de maxila, caracteriza-se por mordida cruzada posterior uni ou bilateral, dentes apinhados e ou rotacionados, e pelo formato ogival do palato. O tratamento em indivíduos adultos tem sido realizado a partir da expansão de maxila cirurgicamente assistida (EMCA), que resulta em efeitos esqueléticos e dentários no arco superior, com expectativa de efeitos no arco inferior. Neste estudo nos propusemos avaliar a ocorrência de alterações dimensionais nos côndilos mandibulares, de pacientes com deficiência transversal de maxila, e submetidos a expansão cirurgicamente assistida em imagens obtidas por tomografias computadorizadas de feixe cônico (TCFC) de catorze indivíduos com deficiência transversal de maxila, sendo cinco homens e nove mulheres, com idades entre 24 e 28 anos. Na reformatação axial as medidas foram obtidas no sentido, látero-medial, póstero-anterior lateral, póstero-anterior central e pósteroanterior medial da superfície articular. Nas reformatações coronais, mensurou-se os sentidos látero-medial superior, látero-medial inferior, látero-medial médio e súperoinferior. Dentre as medidas obtidas e submetidas à análise estatística pelo teste t pareado, somente as medidas axial póstero-anterior lateral esquerda (-0,90mm), coronal médio direita (-1,24mm), coronal inferior esquerda (1,78mm), coronal súpero-inferior direita (0,76mm), axial póstero-anterior lateral (-0,74mm) e coronal inferior (-1,13mm) foram estatisticamente significativas. Os resultados obtidos na amostra estudada nos permitiram concluir que: em indivíduos com deficiência transversal de maxila e submetidos a EMCA, ocorreram alterações dimensionais nos côndilos mandibulares, que puderam ser entendidas por remodelação, uma vez que caracterizaram-se por aumento e redução, dependendo da localização da medida realizada.Transverse maxillary deficiency is characterized by posterior uni or bilateral crossbite, crowded and rotated teeth, as well as high palate. Its treatment in adult individuals is surgically assisted rapid palatal expansion (SARPE). This procedure not only has skeletal and dental effects in the upper arch, but also expresses effects in the lower arch. The objective of this study was to verify the occurrence of dimensional alterations in the mandibular condyles of patients with transversal maxillary deficiency submitted to surgically assisted maxillary expansion. Measurements by cone beam computed tomography (CBCT) of the mandibular condyles, axial plains, lateromedial sizes, posterior-anterior lateral, posterior anterior central, and posterior-anterior medial of the articular surface were performed. In the coronal reformats, the superior lateral medial, inferior lateral medial, medium lateral medial, and superior inferior sizes were measured. CBCT images of fourteen individuals with transversal maxillary deficiency were used, five male and nine female with an average age of 24.28 years. Among the values obtained and submitted to statistical analysis by the paired t-test, only the left posterior-lateral anterior axial measurements (-0.90mm), right middle coronal (-1.24mm), left inferior coronal (1.78mm), right superior-inferior coronal (0.76mm), axial anterior-posterior lateral (-0.74mm) and inferior coronal (-1.13mm) were statistically significant. It was concluded that in individuals with maxillary transversal deficiency that underwent surgically assisted rapid palatal expansion (SARPE), dimensional alterations occurred in the mandibular condyles, which can be understood by remodeling, once they are characterized by an increase and reduction, depending on the location where the measurement was performed.
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Sicilia, Marco. "Correção da discrepância transversal do maxilar superior com expansão rápida." Master's thesis, 2019. http://hdl.handle.net/10284/8347.
Full textAbstract:
A deficiência transversal da maxila é uma componente muito frequente das maloclusões, tanto dentárias
como esqueléticas, geralmente acompanhadas de mordida cruzada posterior uni ou bilateral. Nestas
condições clínicas, a abordagem terapêutica de eleição é a expansão palatina, uma técnica que ganhou
um papel de liderança na ortodontia moderna como um método seguro, previsível e eficaz para corrigir
os déficits transversais da maxila numa ampla gama de condições clínicas.
Este trabalho tem como objetivo estudar os efeitos do uso do expansor rápido do palato sobre as
anomalias causadas pela discrepância transversal da maxila.Transverse maxillary deficiency is a very frequent component of malocclusions, both dental and skeletal, usually accompanied by uni or bilateral posterior crossbite. In these clinical conditions, the therapeutic approach of choice is palatal expansion, a technique that has gained a leading role in modern orthodontics as a safe, predictable and effective method to correct transverse maxillary deficits in a wide range of clinical conditions. This study aims to study the effects of the use of the rapid palatal expander on the anomalies caused by the transverse maxillary discrepancy.
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Knorst, Magali Ester. "Atresia maxilar e respiração bucal: a importância do diagnóstico precoce." Master's thesis, 2020. http://hdl.handle.net/10284/9242.
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O desenvolvimento craniofacial normal é um processo complexo multifatorial, influenciado por fatores genéticos e ambientais envolvendo estímulos funcionais como respiração, mastigação, sucção e deglutição. Sabe-se que a prevalência da atresia maxilar e respiração bucal difere amplamente na literatura, sendo difícil de estimar pois existem poucos estudos referentes a este parâmetro, em investigação com crianças portuguesas mostra uma prevalência de 26% de respiradores bucais em crianças e adolescentes com idades compreendidas entre os 10 e os 15 anos. O objetivo deste trabalho é discutir definições e conceitos subjacentes a AM e RB e alertar para importância do diagnóstico precoce. A múltipla etiologia e consequências clínicas da atresia maxilar associada a respiração bucal torna imprescindível o diagnóstico precoce que atribui o tratamento a uma equipa multidisciplinar, minimizando todas as consequências presentes no respirador bucal, permitindo o crescimento e desenvolvimento normal de cada indivíduo. É imperativo destacar a importância de compreender um ciclo vicioso que envolve o paciente, os profissionais de saúde que o acompanham e todos os elementos da sociedade onde se inserem- pode o MD ser responsável pelo despertar do sinal que interromperá um processo de evolução e retroação negativa.A normal craniofacial development is a complex multifactorial process, influenced by genetic and environmental factors that involve functional stimuli such as breathing, chewing, sucking and swallowing. It is known that the prevalence of maxillary atresia and mouth breathing differs widely in the literature, being difficult to estimate since there are few studies referring to this parameter, in research with Portuguese children it shows a prevalence of 26% of mouth breathers in children and adolescents aged between 10 and 15 years. The objective of this work is to discuss definitions and concepts underlying AM and RB and to alert to the importance of early diagnosis. The multiple etiology and clinical consequences of maxillary atresia associated with mouth breathing make early diagnosis essential, which assigns treatment to a multidisciplinary team, minimizing all the consequences present in mouth breathers, allowing the growth and normal development of each individual. It is imperative to highlight the importance of understanding a vicious cycle that involves the patient, the health professionals who accompany him and all the elements of the society in which they operate the MD may be responsible for awakening the signal that will interrupt a process of evolution and negative feedback .
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Ramos, Manuel António Valério. "Expansão esquelética maxilar com recurso a MARPE (expansor rápido da maxila assistido por mini-implantes) em adultos." Master's thesis, 2019. http://hdl.handle.net/10284/8649.
Full textAbstract:
A expansão rápida da maxila para o tratamento de atresias maxilar tem sido descrita e amplamente utilizada à há algum tempo. Estudos provam que o avançar da idade piora o seu prognóstico e, como consequência disso, a expansão maxilar assistida cirurgicamente é descrita como um tratamento eficiente para pacientes com maturação das suturas craniofaciais. A Expansão maxilar assistida por mini-implantes é um método inovador, que pretende tratar as deficiências transversas da maxila, ser uma alternativa ao método cirúrgico e à expansão rápida da maxila convencional, tentando ultrapassar as limitações destes. O objetivo deste estudo teve por base a realização de uma revisão bibliográfica, através do estudo de artigos científicos disponíveis em bases de dados internacionais de forma a melhor compreender e analisar esta técnica, bem como os seus benefícios e resultados positivos em casos de pacientes com idades cronológicas mais avançadas. A expansão maxilar apoiada em mini-implantes revela ser um método promissor, contando com bons resultados a seu favor. No entanto, é necessário que mais estudos sejam feitos, de forma a alcançar um protocolo standard de instalação, ativação e avaliação da preservação dos resultados a longo prazo.Rapid maxillary expansion for the treatment of maxillary atresia has been described and widely used for some time. Studies have shown that increasing age worsens its prognosis and, therefore, surgically assisted maxillary expansion is described as an efficient treatment for patients with craniofacial suture maturation. The maxillary expansion assisted by mini-implants is an innovative method, which intends to treat the transverse maxillary deficiencies, to be an alternative to the surgical and conventional rapid maxillary expansion method, trying to overcome the limitations of this. The objective of this study was based on a thorough investigation in order to better understand and analyze this technique, as well as its benefits and positive results in cases of patients with more advanced chronological ages. A bibliographic review was also carried out through the study of scientific articles available in international databases. The maxillary expansion supported by mini-implants proves to be a promising method, counting on good results in its favor. However, further studies are needed in order to achieve a standard protocol for the installation, activation and evaluation of the long-term preservation of results.
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Bellerive, Audrey. "Effet de l’expansion palatine sur le bruxisme du sommeil chez des enfants en comparant des appareils d’expansion palatine rapide collé ou bagué." Thèse, 2013. http://hdl.handle.net/1866/10080.
Full textAbstract:
Introduction : Le bruxisme du sommeil est un désordre du mouvement décrit comme un mouvement involontaire de la mastication durant le sommeil. Cette parafonction est observée dans 14-38% de la population pédiatrique. Un lien a été trouvé entre les événements respiratoires et les épisodes de bruxisme. L’expansion palatine rapide (EPR) est un traitement orthopédique effectué chez les enfants en croissance pour régler un manque transverse squelettique du maxillaire supérieur. Quelques études ont observé que l’apnée obstructive du sommeil a été diminuée par un traitement d’expansion palatine rapide. Objectifs : Étant donné que le bruxisme est en lien avec des événements respiratoires et que l’expansion palatine rapide augmente la dimension des cavités nasales, l’objectif de la présente étude est d’évaluer la possible réduction du bruxisme après le traitement d’expansion rapide. Méthodes : Ce projet pilote est une étude clinique randomisée contrôlée de patients consécutifs qui a inclus 27 enfants (8-14 ans, 8 garçons et 19 filles) avec ou sans bruxisme du sommeil. Tous ces patients sont venus à la clinique d’orthodontie de l’Université de Montréal et présentaient un manque transverse du maxillaire supérieur (au moins 5 mm). Dans le cadre de l’étude, les patients devaient passer un enregistrement polysomnographique ambulatoire avant le traitement d’expansion palatine (T0) et après l’activation de l’appareil d’expansion (T1).
Résultats : Les résultats démontrent une diminution du bruxisme chez 60% (9 patients) de nos patients bruxeurs. L’interaction entre le traitement et les groupes (Br et Ctl) s’est avérée significative (p=0,05 ANOVA mesures répétées), et démontre une diminution du bruxisme chez les bruxeurs (p=0,04, t-test paire). Les médianes (min, max) du groupe avec bruxisme sont passées de 3,11 (2,06; 7,68) à 2,85 (0,00; 9,51). Les paramètres de sommeil sont restés stables (Stade N1/N2/N3, REM, efficacité du sommeil), ainsi que les paramètres respiratoires et le ronflement. Conclusion : Une réduction du bruxisme a été observée lors de cette étude, mais un échantillonnage plus grand est nécessaire pour conclure.Introduction: Sleep bruxism (SB) is a movement disorder described as an involuntary mastication movement during sleep. This parafunction is observed in 14-38% of the child population. A link was found between respiratory events and episodes of bruxism. Rapid palatal expansion (RPE) in children is an orthopedic treatment that is effective in correcting maxillary transverse deficiency and in reducing obstructive apnea syndrome (OAS) by increasing airway capacity. Objectives : Since bruxism is related to respiratory events and RPE increases respiratory capacity, the objective of this study is to evaluate the possible reduction of bruxism after RPE therapy. Material and Methods : This prospective randomized controlled clinical pilot study recruited 27 children (8-14 years old, 8 boys, 19 girls) with or without sleep bruxism. These patients were seeking treatment for transverse maxillary deficiency (5 mm or more) at the orthodontics department of the University of Montreal. Patients underwent an ambulatory polysomnography before (T0) and after expansion (T1). Sleep parameters, rhythmic muscular masticatory activity index were evaluated. Results : The results show a reduction of bruxism in 60% of bruxer patients (9 participants). The interaction between the treatment and the groups (Br and ctl) was significant (p=0,05, repeated measures ANOVA). A reduction of bruxism is shown for bruxers (p=0,04, paired t-test). The sleep parameters stayed stable after RPE (Stage N1/N2/N3, REM, sleep efficiency) as well as the breathing parameters and snoring data. The medians (min, max) of bruxism group went from 3,11 (2,06; 7,68) to 2,85 (0,00; 9,51). Conclusion : During this study, a reduction of bruxism was observed but a larger sample size is needed to conclude on the subject.
Book chapters on the topic "Maxillary deficiency"
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Mathew, Philip, Mustafa K, and Paul Mathai. "Cleft Maxillary Hypoplasia." In Oral and Maxillofacial Surgery for the Clinician, 1675–702. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-1346-6_75.
Full textAbstract:
AbstractCleft lip and palate patients are born with a challenging deformity that requires multiple surgical interventions in order to reach functional and esthetic harmony. Mid face deficiency in cleft patients is a challenging clinical problem very often encountered in the management of this congenital defect. Cleft maxillary hypoplasia can be attributed to the inherited traits, acquired traits and Induced traits. CLP patients usually present with symptoms varying from malocclusion, retrusion of midface, and a narrow hard palate. A detailed evaluation and individualized treatment planning is of utmost importance in dealing with these patients. Treatment involves the contribution from both the orthodontist and the craniofacial team. The goals for the treatment for cleft maxillary hypoplasia are improvement of aesthetic deficits as well as correction of malocclusion.
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Posnick, Jeffrey C. "Maxillary Deficiency: Unilateral Cleft Lip and Palate." In Fundamentals of Maxillofacial Surgery, 293–99. New York, NY: Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-1898-2_19.
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David, David J. "Surgical Management of Vertical Maxillary Deficiency (VMD)." In Orthognathic Surgery, 463–79. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119004370.ch27.
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Posnick, Jeffrey C. "Maxillary Deficiency: Bilateral Cleft Lip and Palate Deformity." In Fundamentals of Maxillofacial Surgery, 300–306. New York, NY: Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-1898-2_20.
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Nervina, Jeanne M., Sunil D. Kapila, and Carlos Flores-Mir. "Assessment of Maxillary Transverse Deficiency and Treatment Outcomes by Cone Beam Computed Tomography." In Cone Beam Computed Tomography in Orthodontics: Indications, Insights, and Innovations, 383–409. Ames, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118674888.ch17.
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Perciaccante, Vincent James. "Maxillary Deficiency." In Current Therapy In Oral and Maxillofacial Surgery, 626–39. Elsevier, 2012. http://dx.doi.org/10.1016/b978-1-4160-2527-6.00076-1.
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Alcalde, Rafael E., Dale S. Bloomquist, and Don Joondeph. "Maxillary Deficiency." In Current Therapy In Oral and Maxillofacial Surgery, 640–50. Elsevier, 2012. http://dx.doi.org/10.1016/b978-1-4160-2527-6.00077-3.
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Mcnamara, James A. "Maxillary Deficiency Syndrome." In Current Therapy in Orthodontics, 137–42. Elsevier, 2010. http://dx.doi.org/10.1016/b978-0-323-05460-7.00012-0.
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Posnick, Jeffrey C. "Maxillary Deficiency with Relative Mandibular Excess Growth Patterns." In Orthognathic Surgery, 686–757. Elsevier, 2014. http://dx.doi.org/10.1016/b978-1-4557-2698-1.00020-4.
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Moore, Ryan M., and Raj M. Vyas. "Orthognathic Surgery." In Operative Plastic Surgery, edited by Gregory R. D. Evans, 609–22. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190499075.003.0058.
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Orthognathic surgery restores the facial function and aesthetics affected by skeletal and dental deformities. A comprehensive preoperative evaluation, including cephalometric analysis, is essential to correcting facial skeletal imbalance and asymmetry. Operative planning must account for maxillary-to-mandibular occlusal relationship and dental compensations, as well as facial proportions in all dimensions. Virtual surgical planning has recently emerged as a way to facilitate more precise and accurate surgical planning. Operative techniques used to correct facial skeletal and dental deformities, broadly categorized as maxillary or mandibular excess or deficiency, include the LeFort I osteotomy, bilateral sagittal split osteotomy, and genioplasty.
Conference papers on the topic "Maxillary deficiency"
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Akutsu, Y., K. Mori, S. Suzuki, M. Ishikawa, H. Sakai, K. Hiwatashi, H. Fujimoto, E. Endo, and H. Yasuda. "A NEW DISORDER CHARACTERIZED BY FACTOR V DEFICIENCY AND MOLECULAR ABNORMALITY OF VON willEBRAND FACTOR ANTIGEN." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643281.
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Two patients with a new type of combined factor V and factor Vm deficiency is described. The propositus was 41 year-old woman who had never experienced any bleeding episode. We considered that this case was to be one of the combined factor V/Vin deficiency from the results of prolonged prothrombin time, 23.5 sec. (control 12.6 sec.) and kaolin partial thromboplastin time, 58.9 sec. (control 39.2 sec.) before surgery because of the right postoperative maxillary cyst. Coagulation studies at the time showed that the mean F. V and F. Vm levels were 11.5 % and 27 %, respectively. Von willebrand factor (vWF) which is the biological activity of F. VIII related platelet adhesion and vWF:Ag were also decreased (vWF:Ag 34 %, vwF 36.5 %). Bleeding time, platelet aggregation induced by ADP, collagen and ristocetin were normal. Another coagulation factors were normal and pathological inhibitors were not detected. The antigen levels of protein C (PC) and protein S (PS) were found to be normal. Her younger brother, who had no*past history of spontaneous bleeding, was found to be same abnormality (F. V 13 %, F. VIE 38 %, vwF:Ag 64 %, vWF 58 %). Bleeding time, platelet aggregation, another coagulation factors, PC and PS were normal. Furthermore, decreased intermediate multimers of vWF:Ag in these cases were observed on two-dimensional crossed immunoelectrophoresis.Since first case described by Oeri et al in 1954, approximately 40 combined factor V/Vm deficiency have been reported. In most such cases, vWF:Ag, vwF levels, and the electrophoretic mobility were within the normal range. In our cases, vwF:Ag and vwF were apparently decreased, and appeared to be the same abnormality as the von willebrand disease type-I. From the above mentioned findings, these patients were thought to be a new disorder of combined F. V deficiency and molecular abnormality of F. VIE ( vWF:Ag).