Abstract
Japanese TMJ Societies classification of the type III-b Temporomandibular-Disorder is a craniomandibular disorders with limited mouth opening. Prediction of the treatment outcome before treatment is valuable in today's dentistry in any treatment. Information on prediction of the treatment outcome in TMD was quite limited. The Clinician performs various examinations on patients. This study will analyses 30 patients with type III-b TMD. Correlation between all the examination data was analized. Partial correlation coefficient was calculated after removing influences of age and sex. Behavioral modification, manipulation, Mouth opening excise were applied as treatment.
In duration of the treatment, it became clear that the category of CMI, the existence of a subjective occlusal instability, and the tenderness level of a medial pterygoid muscle and a lateral pterygoid muscle are important. Formula includes category of CMI, and occlusal instability sensation gives multiple regression coefficient R=0.675 and adjusted R square was 0.414.In the mouth opening, tenderness at insertion of the Masseter and area of Mental foramen showed correlation. However, estimation of absolute value of opening seemed be difficult. In change of mouth opening after treatment, mouth opening at before treatment showed significant negative correlation. Patients with back neck tenderness showed lesser change.
