Abstract
This report is a study, the purpose of which is to aim at systematizing a clinicalphysiological diagnotic standard for the TMJ dysfunction syndrom in adolescents. The subjects were 5 patients with the occlusal TMJ dysfunction syndrom aged.13-19 (3 boys and 2 girls) who were relieved of the symptoms by means of an occlusal splint and occlusal adjustment. The electoromyographic activities in the anterior temporal (T) and masseter muscles (M) during tooth tapping were recorded bilaterally and the duration of the silent period (SP) before and after treatment was evaluated.
The results obtained were as follows:
1. Occurance of SP was 100% in the control group, in the TMJ group; 98%(session I),99% in during relief of pain on the region of TMJ and limitation of mandibular movement (session II), and 100% when radical care was finished (session III) and no significant differences were found between the control group and each of the sessions.
2. In regard to SP duration in the control group, no significant differences were found between the left and right in the T and M, and between T and M in the same side muscle.
3. In regard to SP duration in the TMJ group, in session I it was significantly shorter than in the control group and equal to session II. In session III significantly more prolonged than session I and equl to control group.
4. In regard to SP duration in the TMJ group, no significant differences were found between left and right in the T and M, and between T and M in the same side muscle in session I and II. However in session III, significant differences were found between T and M in the same side muscle.
5. Comparing the SP duration in the TMJ group before and after treatment, before treatment it was shorter than allowable within the limits of good health and after treatment recovered, and was within the limits of good health.
