Methods:Do cephalometric analysis to the cephalogram of 49 patients in Xi an with malocclusion taken by X-TV.Results:Morphologic variables of head is correlated to three malocclusion.

• 方法:用智能X线电视装置,对西安市49名错牙合患者拍摄自然头位X线侧位片,选择生理耳点,进行头影测量分析。