Electomyographic evaluation of the efficiency ot two prosthetic teeth arrangement techniques in double complete dentures / Avaliação eletromiografica da eficiencia de duas tecnicas de montagem de dentes artificiais em protese total dupla

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The aim of this study was to evaluate by the electromyography muscular activity pattern resulting of two prosthetic teeth arrangement techniques that promote balance in double complete dentures. Twenty-four subjects totally edentulous, free from signs and symptoms of TMJ disorders and with at least five years complete dentures use were divided in two groups of 12 subjects: G1 and G2. In the Group 1, the Conventional technique was used and the interference contacts between artificial teeth were responsible for the balance. In the Group 2, the Nóbilo s Balancing Ramps technique, slippery contacts between ramps surfaces provided balance. The muscular activity pattern was measured by electromyographic (EMG) activity of anterior temporal and masseter muscles in the mandibular rest (R) and maximal biting in the intercuspal position (CIMI) at four times: T0 - installation; T1 - 1st month; T2 - 2nd month; T3 - 3rd month of prostheses use. The electromyographic sign was collected with Myosystem I® conditioned through of digital filter pass band and analyzed in relation to RMS (Root Mean Square). In both groups, in the mandibular rest of the anterior temporal and masseter muscles was observed small alterations in the EMG activity values. In CIMI position, in the Group 1, anterior temporal muscles showed final values smaller than the initial, differently of masseter muscles that showed final values greater than the initial; in the Group 2 inversion values were observed in the temporal muscles and increase in the masseter with light balance in the third month evaluation. Wilcoxon-Mann-Whitney test between the techniques and the Friedman test in the evaluated times did not show significant statistical differences (p<0.05). The techniques clinically studied did not show differences between themselves and the times evaluation did not provide balance in the masticatory muscles studied. In this way, both techniques can be used with similar clinic performance

ASSUNTO(S)

complete dentures eletromiografia protese dentaria completa electromyography

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