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。
2
Objective To discuss the movement path of condylar limit movement in sagittal plane and horizontal plane between the normal occlusion and malocclusion.
目的讨论正常者与错者在下颌极限运动时、咀嚼运动及磨牙时,髁突在矢状向与水平向移动的运动轨迹。
3
Occlusionplane was defined as conference plane, the buccal or lingual inclination of posterior teeth in upper and lower arch was measured.