Effect of soft occlusal splint in masseter and temporal muscles patients with temporomandibular dysfunction
Efeito da placa oclusal resiliente nos músculos masseter e temporal em pacientes com disfunção temporomandibular
Bataglion, César; Palinkas, Marcelo; Regalo, Simone Cecilio Hallak; Siéssere, Selma; Vasconcelos, Paulo Batista de; Bueno, Flavia Letícia; Hotta, Takami Hirono
Rev. odontol. UNESP, vol.41, n1, p.27-32, 2012
Abstract
Introduction: Temporomandibular dysfunction is a pathological change that affects the muscles of mastication, the temporomandibular joint or both and is becoming more and more frequent in dentistry. Objective: The aim of this study was to analyze the effect of treatment with soft occlusal splint on the electromyographic activity of masseter and temporal muscles and maximal molar bite force in patients with temporomandibular disorders. Material and Methods: Were selected twelve patients in the Department of Orofacial Pain and Temporomandibular Disorders Center Patient Special FORP / USP with temporomandibular disorder, diagnosed by the RDC/TMD index, and underwent an examination of EMG and maximal molar bite force before forty and five to ninety days after the nightly use of soft occlusal splints. Results: The mean normalized EMG obtained from the masseter and temporal muscles obtained during the clinical conditions of rest, protrusion, right and left laterality, clenching in maximum voluntary contraction force and maximal molar bite right and left were statistically analyzed using the software "Statistical Package for the Social Sciences "SPSS version 17,0 (Chicago, IL), where he was executed the paired t test, Data were subjected to statistical analysis (SPSS 17,0) with a confidence level of 95% (p <0,05). Conclusion: The authors observed that after using the occlusal soft occlusal splint in clinical conditions satisfactory changes occurred quotes, on the values electromyographic and there was an increase in the strength of bite
Keywords
Temporomandibular joint, occlusal splints, electromyography, bite force, masticatory muscles.
Resumo
Introdução: A disfunção temporomandibular é uma alteração patológica que afeta os músculos da mastigação, a articulação temporomandibular ou ambos e vem se tornando cada vez mais frequente na Odontologia. Objetivo: O objetivo deste estudo foi analisar o efeito do tratamento com placa oclusal resiliente na atividade eletromiográfica dos músculos masseter e temporal e força de mordida molar máxima em pacientes portadores de disfunção temporomandibular. Material e método: Foram selecionados doze pacientes do Serviço de Dor Orofacial e Disfunção Temporomandibular do Centro de Pacientes Especiais da FORP/USP com disfunção temporomandibular, diagnosticados pelo índice RDC/TMD, e submetidos a exames eletromiográficos e de força de mordida molar máxima antes, quarenta e cinco e noventa dias após o uso noturno da placa oclusal resiliente, Resultado: As médias eletromiográficas normalizadas obtidas dos músculos masseter e temporal durante as condições clínicas de repouso, protrusão, lateralidade direita e esquerda, apertamento dental em contração voluntária máxima e a força de mordida molar máxima direita e esquerda foram analisadas estatisticamente utilizando o software “Statistical Package for the Social Sciences” SPSS versão 17,0 (Chicago, IL), onde foi executado o teste t pareado, Os dados foram submetidos à análise estatística com um nível de confiança de 95 (p< 0,05). Conclusão: Os autores observaram que após o uso da placa oclusal resiliente nas condições clínicas propostas, ocorreram alterações satisfatórias nos valores eletromiográficos e houve um aumento da força de mordida
Palavras-chave
Articulação temporomandibular, placas oclusais, eletromiografia, força de mordida, músculos mastigatórios
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