摘要
目的 探讨下颌前突患者升支矢状劈开截骨术 (bilateralsagittalsplitramusosteotomy,BSSRO)术后骨性复发的相关因素。方法 以术后长期面角 (∠NP FHT4 3)的变化作为因变量 ,选择术前术后 12项自变量 ,对两者之间的关系进行多元线性相关及偏相关分析。结果 术后长期下颌平面角 (∠MP FHT4 3)、术前正畸疗程、术后观察期与因变量呈显著负相关关系 (r分别为 - 0 5 68、- 0 4 0 6、- 0 4 0 0 ,P <0 0 1～ 0 0 5 )。结论 下颌前突患者BSSRO术后的骨性复发非常有限 ,术前正畸疗程、术后下颌旋转与术后矢状颌位的稳定相关。
Objective To investigate the factors responsible for the skel etal relapse after correction of mandibular prognathism by BSSRO. Method s The s keletal and dental changes before and after the surgery were analysed by cephal ometrics,The factors that might be responsible for the skeletal relapse were evaluated using multiple linear and partial correlation analysis. Resul ts The changes of NP-FH angle at follow up had a significant correlati on with MP-F HT 4-3 angle, the duration of presurgical orthodontics and the observatio n perio d after surgery(r=-0.568,-0.406?-0.400,P<0.01～0.05 ). Conclusion The skeleta l relapse following BSSRO was limited.The stability was related to the period o f presurgical orthodontics and the mandibular rotation after the surgery.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2001年第5期374-375,共2页
Chinese Journal of Stomatology
