In order to obtain the basic data for diagnosis of occlusion the author investigated the occlusal sounds produced by mandibular closing movement from rest position to centric occlusion by using the Korotkoff sounds microphone electrodes and physiograph for Korean 20S without TMJ problems. And the author analyzed the correlation of the occlusal sounds with height, body weight, mandibular closing movement distance, maxillary sinus size and master muscle activities relating to the production of occlusal sounds.
The obtained results were as follows:
1. The occlusal sounds produced by mandibular closing movement from rest position to centric occlusion were ranged from 3.Q8mV to 52.OOmV, their mean value 19.07mV in right side, and ranged from 2.41mV to 18.33mV, their mean value 9.19mV in left side in group of Angle´s class I occlusion subjects having right habitual side of mastication.
2. In general the occlusal sounds in- the habitual side of mastication were- greater than those in the opposite side.
3. The correlations of the occlusal sounds with height and maxillary sinus size were not significant.
4. The correlation of the occlusal sounds with body weight, mandibular closing movement distance and masseter muscle activities were significant.
|