二、高角病例和低角病例的临床特征The case of high-angle and low angle of the clinical features
3、硬组织颅面形态:高角病例的腭平 面、牙合平面和下颌平 面向下倾斜, 下颌角钝, 下颌下缘弯曲, 磨牙与 平面角度倾斜, 上下前 牙唇向倾斜, 上下中切 牙角较小high-angle case:- the palatal plane, occlusal plane and mandibular plane is low, angle of mandible is large, curved mandibular lower margin, slightly proclined upper and lower anterior teeth. Angle beteen long axis of upper and lower incisor is small.