Whether a myo-moniter and a dental sound checker can be combined in use in the treatment of TMJ syndrome was investigated in dentulous subjects with normal occlusion. The results were as follows : 1. Before stimulating by a myo-moniter, the occurrence rate of clear-cut sound was 96.1% and that of muffled sound and double sound combined was 3.9%. After stimulation, clear-cut sound accounted for 80.6% and muffled sound and double sound combined 19.4%. 2. The duration was 7.27±2.54 msec before stimulation and 7.36±3.04 msec after stimulation. 3. The subjects who realized changes in the tapping points before and after stimulation accounted for 61.5% and those who did not 38.5%. 4. Close relation was recognized between the subjects' realization of changes in the tapping points and analysis of occlusal sound waves.
