Methods:Surface electromyography (EMG) of temporalis,masseter and digastric was recorded in 10 adult cases with unilateral mandibular hyperplasia,The EMG of the normal side was compared with that of the abnormal.

• 方法 :以 10例成年单侧下颌骨过度发育性不对称畸形患者为研究对象 ,通过肌电图仪测试双侧颞肌、咬肌、二腹肌在功能活动时的肌电变化 ,进行该类患者双侧咀嚼肌肌电活性比较 ;