微型钛板骨支抗联合Ⅲ类颌间牵引矫治AngleⅢ类骨性错畸形疗效观察

姚丽霞，刘杰，李君，陈保兴

(聊城市人民医院，山东聊城252000)

1 资料与方法

1.3 观察指标 治疗前和治疗结束均常规拍摄X线头颅定位侧位片，所有头影测量片的定点和测量均由作者完成，每个测量点均定点2次，每次相隔2周，然后取其平均值。比较矫治前后蝶鞍点鼻根点上颌骨基点角(SNA，代表上颌骨相对于前颅底的位置关系)、蝶鞍点鼻根点下颌骨基点角(SNB，代表下颌骨相对于前颅底的位置关系)、ANB(代表上、下颌基骨相互间的位置关系)、前后鼻棘点的连线与前颅底平面的角(PP-SN，代表腭平面相对于前颅底的位置关系)、前鼻棘点与翼上颌裂点的连线(ANS-Ptm，代表上颌骨的长度)、下颌平面与前颅底平面的角(MP-SN，代表下颌骨的陡度)及前鼻棘点、颏下点的连线与鼻根点、颏下点连线的比值、(ANS-Me/N-Me，代表上面高与下面高的比值)、面凸角(Ns-Sn-Pos，代表上下唇的凸面)和上唇突点至审美平面的距离(UL-E，代表上唇突度)、下唇突点至审美平面的距离(LL-E，代表上唇突度)。

2 结果

治疗前后SNA、SNB、ANB、SN-PP、MP-SN、ANS-Ptm、U1-SN、L1-MP、ANS-Me/N-Me、Ns-Sn-Pos、UL-E、LL-E比较见表1。

表1 两组治疗前后SNA、SNB、ANB、SN-PP、MP-SN、ANS-Ptm、U1-SN、L1-MP、ANS-Me/N-Me、Ns-Sn-Pos、UL-E、LL-E比较

注：与本组治疗前比较，﹡P<0.05;﹡﹡P<0.01；与对照组治疗后比较，cP<0.05。

3 讨论

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