CAJ | 학술논문

目的：探讨骨性Ⅲ类畸形患者经正畸正颌联合治疗后牙齿、骨骼的变化及长期稳定性。方法选取在我院就诊的骨性Ⅲ类畸形患者26例，采用正畸-正颌联合治疗，正颌术式采用上颌LeFort Ⅰ型加下颌矢状劈开术。在矫治前（T0），正颌手治疗后6个月（T1）、治疗后3年（T2）拍摄X线头颅定位侧位片，测量并分析牙齿和骨骼的变化情况。结果治疗后6个月与治疗前相比除Y轴角和N-S-Ar改变差异无统计学意义（P＞0.05），其余测量项目的差异均有统计学意义（P＜0.05）。治疗后3年与治疗后6个月相比：SNB增大差异有统计学意义（P＜0.05），提示下颌骨向前移动。U1-SN的变化差异有统计学意义（P＜0.05）。结论正畸-正颌联合治疗骨性Ⅲ类畸形可以取得良好的疗效且较稳定。
목적：탐토골성Ⅲ류기형환자경정기정합연합치료후아치、골격적변화급장기은정성。방법선취재아원취진적골성Ⅲ류기형환자26례，채용정기-정합연합치료，정합술식채용상합LeFort Ⅰ형가하합시상벽개술。재교치전（T0），정합수치료후6개월（T1）、치료후3년（T2）박섭X선두로정위측위편，측량병분석아치화골격적변화정황。결과치료후6개월여치료전상비제Y축각화N-S-Ar개변차이무통계학의의（P＞0.05），기여측량항목적차이균유통계학의의（P＜0.05）。치료후3년여치료후6개월상비：SNB증대차이유통계학의의（P＜0.05），제시하합골향전이동。U1-SN적변화차이유통계학의의（P＜0.05）。결론정기-정합연합치료골성Ⅲ류기형가이취득량호적료효차교은정。
Objective Investigate the effect of orthodontic and orthognathic treatment of patients with skeletal ClassⅢ malocclusion.methods 26 patients were selected. All patient underwent orthodontic and orthognathic treatment . lateral Cephalograms were taken before treatment(T0), 6 months after treatment(T1), 3 year after treatment(T2).Results Compared with the stage T0 , in addition to the N-S-Ar, and Y axis, other projects changed statistical signiifcances. Compared with the stage T1 only SNB and U1-SN had signiifcant differences.Conclusion Orthodontic treatment combined with orthognathic treatment of skeletal ClassⅢ malocclusion have curative effect and long-term stability.