The purpose of this study is to clarify the relation between psychological factors and stomatognathic dysfunction. 37 patients without radiographically abnormal bone change of TMJ with stomatognathic dysfunction who had pains about TMJ masticatory muscles, head, neck, or shoulder were selected and divided into two groups. Group A was composed of 19 patients whose pains disappeared within six months from the start of treatments. Group B was composed of 18 patients whose pains did not disappear within six months from the start of treatments. The two groups were compared on the CMI test, chief complaints, symptoms, and period from occurrence of symptoms to patients visiting our hospital.
The results obtained were as follows;
1.5.3% of group A and 38.9% of group B belonged to region III or IV of the CMI test.
2. Chief complaints of group A were narrowed down to four but those of group B were many.
3. As for location of pains, 94.7% of group A and 50% of group B had TMJ pain, 63.2% of group A and 66.7% of group B had masticatory muscle pain and 21.1% of group A and 55.6% of group B had neck and/or shoulder pain.
4. The patients of group B tended to visit our hospital later than those of group A after occurrence of symptoms.