Estudo eletromiografico e eletrognatografico em pacientes com alterações funcionais do sistema estomatognatico, reabilitados com protese fixa

AUTOR(ES)

Frederico Augusto Peixoto Silva

DATA DE PUBLICAÇÃO

2001

RESUMO

This study was conducted to investigate the range of mandibular movements in the frontal and sagittal planes, and the electromyographic activity (K6-1 Diagnostic System-Myo-tronics Research Inc., Seattle-WA) of the masseter and anterior temporalis muscles during rest and maximal intercuspal clenching in subjects with temporomandibular disorders. Fourteen patients, mean age of 38,7 years, were divided into two groups, one myogenous and other arthrogenous according to LOBBEZOO-SCHOLTE et al. (1993), and treated with flat occlusal splints. The both of them were rehabilitated with fixed partial prostheses according to WEINBERG (1983), WOOD (1988) e CLAYTON (1995). The electronic jaw tracking and the electromyographic evaluations were performed before, and 120 and 180 days after the cementation of the fixed prostheses. The data were compared using the Mann-Whitney U-test nonparametric analysis, and the results showed no differences between the groups in the criteria maximal vertical opening, left and right deviations, rest activity of the masseter and anterior temporalis muscles, and maximal intercuspal clenching activity of the anterior temporalis muscles, however, the arthrogenous group demonstrated greater maximal intercuspal clenching activity in the masseter muscle. Both the arthrogenous group and the myogenous group exhibited symmetric electromyographie activity between the left and right sides at rest and at maximal intercuspal elenching in the masseter and anterior temporalis muscles, though the myogenous group showed the mean rest activity greater in the left side. Both the arthrogenous group and the myogenous group displayed a significant left deviation during the maximal vertical opening of the jaw

ASSUNTO(S)

articulação temporomandibular eletromiografia oclusão (odontologia) protese dentaria

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