下颌运动反映口颌系统的肌肉、关节、咬合三者间的关系,如三者关系正常,则下颌运动正常,反之,则出现下颌运动异常。下颌运动异常是颞颌关节紊乱综合征(TMJDS)的临床表现之一,因此,有人认为诊 Mandibular movements reflect the mouth of the jaw muscles, joints, bite the relationship between the three, such as the normal relationship between the three, the normal jaw movement, on the contrary, there is abnormal mandibular movement. Anomalous mandibular motion is one of the clinical manifestations of TMJDS. Therefore, some people think that the diagnosis