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The effect of surgical anterior positioning of the masseter muscles: A cephalometric, histologic, and tetracycline staining appraisalSteinberg, Marvin H. January 1975 (has links)
Thesis (M.Sc.D.) - Boston University School of Graduate Dentistry, 1975. Orthodontics. / Bibliography included.
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Análise dos resultados do tratamento da mordida cruzada posterior funcional com o expansor fixo HyraxMartins, Lídia Pimenta [UNESP] 14 September 2011 (has links) (PDF)
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martins_lp_me_araca.pdf: 328155 bytes, checksum: 069128424a93c5beeca6d73d9e7a8b77 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Objetivo: O objetivo deste estudo clínico controlado foi avaliar os efeitos da expansão da maxila com o aparelho Hyrax modificado sobre a dimensão transversal da maxila em níveis esquelético basal, alveolar e dentário por meio da tomografia computadorizada de feixe cônico. Materiais e Métodos: Oito pacientes com média de idade de 7 anos e 1 mês, portadores de mordida cruzada posterior unilateral funcional foram submetidos a um tratamento ortodôntico por meio de um aparelho expansor fixo, seguindo um protocolo clínico com ativações do parafuso de dois quartos de volta por dia até atingir a sobrecorreção das mordidas cruzadas. Foram obtidas tomografias pré-expansão (T1) e pós-contenção (T2), caracterizado por um período de 5 meses pós-expansão. Sobre estas tomografias foram realizadas medidas da base maxilar, da distância entre as cristas alveolares e da distância intermolares vestibulares e palatinas. Resultados: Os resultados mostraram um aumento percentual em todas as dimensões lineares transversais, com uma diminuição da magnitude dos efeitos dentários (6%) para o osso basal (2,1%). Conclusão: A expansão da maxila foi obtida como efeito geral pós-tratamento, sendo a expansão predominante no aspecto dentário / Purpose: The present controlled clinical trial aimed to investigate the effects of maxillary expansion with modified Hyrax device on the transversal dimension of maxilla in the skeletal, dento-alveolar and dental levels by using a cone beam computerized tomography (CT). Materials and Methods: Eight patients (mean age of 7 years and 1 month) with functional unilateral posterior crossbite were subjected to orthodontic treatment with fixed expansion appliance. The activation of the screw was two-quarter turns per day. CT scan was conducted in the pre (T1) and pos (T2) treatment. The maxillary base, the distance between the alveolar ridges, and the intermolar buccal and palatine distances were measured. Results: An increase of all linear transverse dimensions, decreasing in magnitude from dental (6%) to basal bone (2.1%). Conclusion: Maxillary expansion was observed after treatment in which the dental aspect was the most predominant expanded
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Avaliação das disfunções orofaciais e temporomandibulares, ansiedade e níveis de cortisol salivar em crianças e adolescentes com bruxismo do sono / Evaluation of orofacial and temporomandibular dysfunctions, anxiety and salivary cortisol levels in children and adolescents with sleep bruxismMontes, Ana Bheatriz Marangoni, 1983- 20 August 2018 (has links)
Orientadores: Maria Beatriz Duarte Gavião, Paula Midori Castelo Ferrua. / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba. / Made available in DSpace on 2018-08-20T01:31:17Z (GMT). No. of bitstreams: 1
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Previous issue date: 2012 / Resumo: O bruxismo do sono (BS) é uma parafunção caracterizada pelo ranger ou apertar dos dentes, pode causar desgaste dentário e dor, apresenta alta prevalência na infância e é considerado uma resposta física ao estresse, embora esta relação seja controversa. O objetivo deste estudo, composto por dois capítulos, foi avaliar fatores morfológicos, funcionais e fisiológicos em crianças e adolescentes de 7 a 17 anos com sinais e sintomas de BS. O primeiro capítulo, refere-se a um estudo do tipo caso-controle, intitulado "Is sleeping bruxism related to temporomandibular disorders, malocclusion and orofacial dysfunction?", que comparou a presença de disfunção temporomandibular (DTM), maloclusão e disfunção orofacial em indivíduos com e sem BS. Foram avaliados 316 indivíduos, dos quais 52 apresentaram BS, de acordo com os critérios de diagnóstico estabelecidos pela Classificação Internacional de Distúrbios do Sono. O grupo controle foi formado por 104 indivíduos pareados de acordo com a idade, gênero e variáveis corporais. Deste modo, a amostra considerada para este estudo foi composta por 156 indivíduos, com idade média de 10,86±2,32 anos. A DTM foi avaliada pelo Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) (Eixo I). Para a maloclusão utilizou-se o Índice de Necessidade de Tratamento Ortodôntico (IOTN) e para as disfunções orofaciais o instrumento The Nordic Orofacial Test Screnning (NOT-s). Os dados foram submetidos à estatística descritiva, teste de Shapiro- Wilks, testes t de Student para amostras independentes, Mahn-Whitney, Chi-quadrado ou exato de Fisher, quando indicados, com nível de significância de ?=0,05. Os resultados mostraram que a prevalência de BS foi maior no gênero masculino. A presença maloclusão e DTM foi similar em ambos os grupos. No entanto, os escores de NOT-S foram significativamente maiores no Grupo Caso e no gênero feminino. Hábitos, problemas na mastigação, na deglutição e nos músculos mastigatórios foram as alterações mais prevalentes da disfunção orofacial em indivíduos com BS. Concluiu-se que a disfunção orofacial foi mais severa e prevalente em crianças e adolescentes com BS; maloclusão e DTM não apresentaram relação com BS. O segundo estudo, intitulado "Evaluation of sleep bruxism, temporomandibular disorder, anxiety and salivary cortisol levels in children and adolescents," teve como objetivo verificar se havia associação entre BS e fatores emocionais, subjetivamente pela avaliação de sintomas de ansiedade e objetivamente pela quantificação dos níveis de cortisol salivar. Verificou-se a influência de características antropométricas, gênero e DTM. O estudo envolveu 316 indivíduos com idade de 10,64±2,24 anos. Os sintomas de ansiedade foram avaliados com a Escala Multidimensional de Ansiedade para Crianças (MASC). Para avaliação do cortisol salivar coletou-se amostras de saliva estimulada em dois dias alternados, ao acordar, 30 minutos e uma hora após e antes de dormir. A quantificação do cortisol foi realizada pela técnica de enzimaimunoensaio. Para as características antropométricas determinou-se o índice de massa muscular (IMC=peso/altura2). A DTM foi avaliada pelo RDC/TMD. Os resultados foram analisados por meio de estatística descritiva, análise de variância e regressão logística múltipla. Não houve associação significativa entre BS e idade, IMC, DTM, ansiedade e níveis de cortisol salivar. O gênero masculino apresentou maior probabilidade de apresentar BS. Os escores de ansiedade foram significativamente mais altos tanto para o gênero feminino quanto para indivíduos com DTM. Conclui-se que crianças e adolescentes com DTM apresentaram maiores escores de ansiedade em relação aquelas com bruxismo e do grupo controle. Escores de ansiedade foram maiores em meninas, porém meninos foram mais propensos a apresentar BS. O BS não apresentou associação com ansiedade, níveis de cortisol salivar, IMC e DTM / Abstract: Sleeping bruxism (SB) is a parafunction characterized by grinding or clenching of teeth that can cause tooth wear and pain, shows high prevalent in children, and is considered a physical response to stress. The aim of this study, a composite of two chapters, was to evaluate morphologic, functional, and physiological factors in children and adolescents age 7 to 17 years with signs and symptoms of SB. The first chapter refers to a case-control study titled ?Is sleeping bruxism related to temporomandibular disorders, malocclusion, and orofacial dysfunction?? It compared the presence temporomandibular disorders (TMD), malocclusion, and orofacial dysfunction in individuals with and without SB. Three hundred and sixteen subjects were evaluated, of whom 52 presented BS, according to the diagnostic criteria established by The International Classification of Sleep Disorders. The control group was composed of 104 individuals matched by gender, age, and body variables. Thus, the considered sample consisted of 156 subjects, with mean age of 10.86±2.32 years. The TMD was assessed by the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) (Axis I). For malocclusion the study used The Dental Health Component of the Index of Orthodontic Treatment Need (IOTN), and for orofacial dysfunction The Nordic Orofacial Test Screening (NOT-S) was employed. Data were submitted to descriptive statistics, Shapiro-Wilks, Student t test for independent variables, Mahn-Whitney, Chi-square, and Fisher's exact tests, when indicated, with a significance level of ?=0.05. The results showed that the prevalence of SB was higher in the male gender. The presence of malocclusion and TMD was similar in both groups. However, the NOT-S scores were significantly higher for the case group than the control groups, as well as for females. Habits, impairment in chewing, swallowing, and masticatory muscles were the most frequent conditions of orofacial dysfunction in subjects with bruxism. It was concluded that the orofacial dysfunction was more severe and prevalent in children and adolescents with SB; malocclusion and TMD had no relation to SB. The second chapter, ?Evaluation of sleep bruxism, temporomandibular disorders, anxiety, and salivary cortisol levels in children and adolescents,? aimed to verify if there was an association between SB and emotional factors, both subjectively, by evaluating anxiety symptoms, and objectively, by determining the salivary cortisol levels. The influence of the anthropometric characteristic, gender, and TMD was verified. The study involved 316 individual with mean age of 10.64±2.24 years. Anxiety symptoms were assessed with the Multidimensional Anxiety Scale for Children (MASC). For assessment of salivary cortisol, salivary samples were collected on two alternate days: upon waking, 30 minutes and 1 hour after waking, and before sleep. Quantification of cortisol was performed by enzyme immunoassay. For anthropometric characteristics, the body mass index was calculated (BMI=weight/heght2). The TMD was evaluated by the RDC/TMD. The results were analyzed using descriptive statistics, analysis of variance, and multiple logistic regression. No significant relation was found between bruxism, age, BMI, TMD, anxiety, and salivary cortisol levels. Males had a higher probability of having SB. Anxiety scores were higher in females and subjects with TMD. It was concluded that children and adolescents with TMD had higher anxiety scores compared to those in the control group and those with bruxism. Anxiety scores were higher in girls, but boys were more prone to BS. The BS was not associated with anxiety, salivary cortisol levels, BMI, and TMD / Mestrado / Odontopediatria / Mestre em Odontologia
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The Integumental Profile: A Study of Acceptable and Malocclusion FacesBurnstone, Charles J. 06 1900 (has links)
Indiana University-Purdue University Indianapolis (IUPUI)
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A Longitudinal Cephalometric Study of Several Factors Involved in Overbite Correction and Recurrence in Class II (Angle) MalocclusionsCarr, W. Kelley 12 1900 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / This study is a cephalometric investigation of twenty-two patients (nineteen females and three males) in which problems of overbite evaluation, correction and recurrence were investigated. Problems of anterior cranial base superpositioning and the measuring of ramus growth are discussed. Two methods of measuring overbite are discussed and evaluated. Where overjet exists, the overjet and the axial inclination of the central incisors were found to affect the potential overbite problem. The range of depression of both maxillary and mandibular central incisors in this sample is discussed. The suggestion is made that this range indicates important information to us for indicating limitations and opportunities in treatment planning and appliance design. An increase in overbite following active treatment was observed in all members of the sample. This was also true when intermaxillary height was increasing following active treatment. A strong tendency for maxillary and mandibular central incisors to elevate following the completion of the active treatment was noted. The individual data suggests that the elevation of teeth following active treatment may be dependent upon other factors than the amount the tooth was depressed during active treatment.
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A serial study of open bite a thesis submitted in partial fulfillment ... orthodontics ... /Clinthorne, Howard N. January 1965 (has links)
Thesis (M.S.)--University of Michigan, 1965.
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The development of an objective orthodontic treatment-need indexDanyluk, Ken, January 1998 (has links)
Thesis (M. Sc.)--University of Manitoba, 1998. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Quality assurance in orthodontics assessment of child/parent perceptions and recognition of need for treatment : a thesis submitted in partial fulfillment ... for the degree of Master of Science (Orthodontics) /Pather, Kumendran. January 1999 (has links)
Thesis (M.S.)--University of Michigan, 1999. / Includes bibliographical references.
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A comparison of three non-extraction treatment modalities for the correction of Class II malocclusion a thesis submitted in partial fulfillment ... for the degree of Master of Science in Orthodontics ... /Burkhardt, Donald R. January 2000 (has links)
Thesis (M.S.)--University of Michigan, 2000. / Includes bibliographical references.
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Treatment need a comparison of personal and professional judgments : a thesis submitted in partial fulfillment ... for the degree of Master of Science in Orthodontics ... /Skinner, Barbara A. January 2000 (has links)
Thesis (M.S.)--University of Michigan, 2000. / Includes bibliographical references.
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