Occlusionplane was defined as conference plane, the buccal or lingual inclination of posterior teeth in upper and lower arch was measured.
同时以平面作为参考平面，测量上下颌后牙颊舌向倾斜程度。
2
Purpose To analyse the characteristics of mandibular incisor point chewing movement on frontal plane orbit in youth of normal occlusion.
目的分析正常(牙合)青少年下颌切点额状面咀嚼运动轨迹的特征。
3
Objective To discuss the movement path of condylar limit movement in sagittal plane and horizontal plane between the normal occlusion and malocclusion.