...）： 一种是以第一恒磨牙的咬合中点与上下中切牙的中点连 线； 另一种是自然的或功能合平面 下颌平面（MP，mandibular plane） 通过颏下点与下颌角下缘相切的线 下颌下缘切线 下颌角点、下颌颏顶点连线 下颌支平面（RP，ram...
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下颌平面角 FH-MP ; MP-FH ; MP-SN ; GoGn-SN
下中切牙-下颌平面角 IMPA
下颌支平面 ramal plane
下颌/眼耳平面角度 mandibular plane angle
上颌骨向前发育，下颌骨后退，下颌平面角无明显增大，上下颌骨间不调改善，鼻唇角减小，面型明显改善。
Maxilla grew forward, mandible moved back. The mandibular plane Angle had no significant change. The discrepancy between maxilla and mandible were improved.
交互牵引结合固定平面导板是矫治下颌第一磨牙舌倾的有效方法。
Clinical application of intermaxillary traction and fixed flat bite-plate could correct lingual inclination of mandibular molar effectively.
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。
Occlusion plane was defined as conference plane, the buccal or lingual inclination of posterior teeth in upper and lower arch was measured.
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