CAJ | 학술논문

目的：评价不同垂直骨面型的青少年骨性Ⅲ类错牙合正畸治疗疗效差异。方法收集青少年骨性Ⅲ类错牙合患者42例，根据不同骨面型分为3组，通过头影测量分析比较各组患者治疗前后骨骼与软组织改变，探讨不同垂直骨面型患者错牙合畸形面部改善疗效的差异。结果3组患者凹陷的软组织侧貌均得到改善。高角患者主要通过下颌骨顺时针旋转、牙合平面逆时针旋转及上前牙唇倾、下前牙舌倾代偿来实现前牙反牙合的解除，而低角患者更多依赖上前牙唇倾及上颌骨的发育来实现。均角患者其面部比例及颌骨关系相对正常，矫治后主要变化为牙齿的相对移动。结论不同垂直骨面型青少年骨性Ⅲ类错牙合正畸疗效不尽相同；高角型患者在选择采取单纯正畸治疗时需更加谨慎。
목적：평개불동수직골면형적청소년골성Ⅲ류착아합정기치료료효차이。방법수집청소년골성Ⅲ류착아합환자42례，근거불동골면형분위3조，통과두영측량분석비교각조환자치료전후골격여연조직개변，탐토불동수직골면형환자착아합기형면부개선료효적차이。결과3조환자요함적연조직측모균득도개선。고각환자주요통과하합골순시침선전、아합평면역시침선전급상전아진경、하전아설경대상래실현전아반아합적해제，이저각환자경다의뢰상전아진경급상합골적발육래실현。균각환자기면부비례급합골관계상대정상，교치후주요변화위아치적상대이동。결론불동수직골면형청소년골성Ⅲ류착아합정기료효불진상동；고각형환자재선택채취단순정기치료시수경가근신。
Objective To evaluate the treatment outcomes among different vertical facial skeletal types in adolescences with skeletal Class Ⅲ malocclusion . Method A total of 42 skeletal Class Ⅲ adoles-cences treated by orthodontic treatment were collected and were divided into three groups according to dif-ferent vertical facial skeletal types . The cephalometric measurements before and after treatment were an-alyzed by indepent-samples t-test when homogeneity of variance . Otherwise ,when heterogeneity of vari-ance ,Satterthwaite t-test was used . Results All of the three groups effectively ameliorated the skeletalⅢ deformity . Patients with high angle corrected the crossbite by clockwise rotation of the mandibles ,an-ticlockwise rotation of the occlusion planes and the teeth compensation ,while low angle patients more de-pended on upper anterior teeth protrusion and the forward growth of the maxillary . The change of the normal angle patients were the teeth relative movement . Conclusion The treatment outcomes were not the same among adolescences with skeletal Class Ⅲ malocclusion by normal orthodontic treatment .