Temporomandibular joint disorder syn-drome is a commonly encountered disease in theoral and maxillofacial region. The disease oftenshows:1. Articular dyskinesia: the extent of open-ing mouth is over large or too small and theshape in opening mouth deviated;2. Pain: the muscle groups in the joint re-gion or around the joint feel pain when openingthe mouth or chewing. Generally, there is nospontaneous pain. If there is an organic destruc-tion, tenderness exists;
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