Abstract

Abstract: The aim of the study was to evaluate the relation between the teeth occlusion and electrical activity of the chewing muscles. Materials and method: The analyzed sample included 40 adult healthy patients 20 males and 20 females 20-40 years old, mean age 30 years old. Results: We calculated the mean values of the number of teeth contact for each group. The first group had a contact number =241, the second group 126. Excluding the second molars, there was a uniform distribution in the posterior section. 20% of the contact of the first group and 24.6% of the second group were in the first molars, 22% and 19.8% respectively were in premolars. The POC was estimated for each patient. In the first group the mean values were: 86,80 % for Temporal muscle, 84.7% for Masseter muscle, mean POC value was 85,75%; 124,3µV/µV .s % was the activity of Temporal muscle and 96,4 µV/µV.s %was the activity of Masseter muscle, 109,8µV/µV.s% mean activity. In the second group the mean values were85,38% POC for Temporal muscle, 85,85 % POC for Masseter muscle, 85,61 % mean POC. 89,20 µV/µV.s% was the value of activity of Temporal muscle, 74,90 µV/µV.s% was the value of activity of masseter muscle and 82,05 µV/µV.s% was the mean value of both muscles.Conclussions: The results of this study prove the sistematic influence of the occulsal contacts on the activity of the chewing muscles during contraction.

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