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heng ya qi gu xing lei cuo ( ya he ) jiao zheng qian hou de lin chuang fen xi
Author(s): 
Pages: 612-613
Year: Issue:  6
Journal: THE JOURNAL OF PRACTICAL MEDICINE

Keyword:  正畸学矫正骨性Ⅱ类错(牙合)直丝弓矫治器头影测量;
Abstract: 目的:探讨骨性Ⅱ类Ⅰ分类错(牙合)矫正前后的软硬组织变化的特点,为临床诊断和治疗设计提供参考.方法:选择12~15岁的骨性Ⅱ类Ⅰ分类错(牙合)11例,采用直丝弓技术,进行拔牙矫治,矫正前后进行头颅侧位片测量,数据做统计分析和配对t检验.结果:矫正后上切牙明显内收,下切牙位置基本不变或轻微唇倾,上下颌骨在水平向和垂直向的改变均不显著,但下颌骨有后下旋转的倾向.上唇明显内收,下唇变化不明显.结论:骨性Ⅱ类错牙合的矫正主要通过上下切牙前后移动代偿,矫正深覆盖,深覆(牙合),掩饰颌骨间的差异,真正的颌骨畸形并未得到实质的矫正,严重的畸形仍需手术治疗,提示应早期对颌骨进行生长改良.
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