姚麗霞，劉杰，李君，陳保興

(聊城市人民醫(yī)院，山東聊城252000)

1 資料與方法

1.3 觀察指標(biāo) 治療前和治療結(jié)束均常規(guī)拍攝X線頭顱定位側(cè)位片，所有頭影測量片的定點(diǎn)和測量均由作者完成，每個測量點(diǎn)均定點(diǎn)2次，每次相隔2周，然后取其平均值。比較矯治前后蝶鞍點(diǎn)鼻根點(diǎn)上頜骨基點(diǎn)角(SNA，代表上頜骨相對于前顱底的位置關(guān)系)、蝶鞍點(diǎn)鼻根點(diǎn)下頜骨基點(diǎn)角(SNB，代表下頜骨相對于前顱底的位置關(guān)系)、ANB(代表上、下頜基骨相互間的位置關(guān)系)、前后鼻棘點(diǎn)的連線與前顱底平面的角(PP-SN，代表腭平面相對于前顱底的位置關(guān)系)、前鼻棘點(diǎn)與翼上頜裂點(diǎn)的連線(ANS-Ptm，代表上頜骨的長度)、下頜平面與前顱底平面的角(MP-SN，代表下頜骨的陡度)及前鼻棘點(diǎn)、頦下點(diǎn)的連線與鼻根點(diǎn)、頦下點(diǎn)連線的比值、(ANS-Me/N-Me，代表上面高與下面高的比值)、面凸角(Ns-Sn-Pos，代表上下唇的凸面)和上唇突點(diǎn)至審美平面的距離(UL-E，代表上唇突度)、下唇突點(diǎn)至審美平面的距離(LL-E，代表上唇突度)。

2 結(jié)果

治療前后SNA、SNB、ANB、SN-PP、MP-SN、ANS-Ptm、U1-SN、L1-MP、ANS-Me/N-Me、Ns-Sn-Pos、UL-E、LL-E比較見表1。

表1 兩組治療前后SNA、SNB、ANB、SN-PP、MP-SN、ANS-Ptm、U1-SN、L1-MP、ANS-Me/N-Me、Ns-Sn-Pos、UL-E、LL-E比較

注：與本組治療前比較，﹡P<0.05;﹡﹡P<0.01；與對照組治療后比較，cP<0.05。

3 討論

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