方法:对20例恒牙列下颌偏颌患者及39例正常咬合者拍摄头颅定位后前位、侧位、颈椎标准正、侧位X线片及直立时的面颈和全身照片。

• Methods:20DLJD patients and 39healthy volunteer with normal occlusion were sele cted as patient and control group respectively. Roentgenograms of cephalometric and cervical spine in posterior -anterior position and in nature head lateral position and a lso body photos were taken.