摘要
目的探讨应用三维头影测量对骨性Ⅲ类错畸形患者进行测量的应用条件及方法。方法对20例骨性Ⅲ类患者施行标准双颌手术(双侧下颌升支矢状劈开术+Le FortⅠ型截骨术+颏成形术)。术前术后1周均拍摄CBCT及头颅正侧位片。利用Simplant软件进行三维重建,定义三维头影测量标志点及项目,并进行三维头影测量。同时对二维头影测量片进行二维头影测量。收集共40组二维头影测量及CBCT三维头影测量数据,进行统计学分析。结果二维头影测量和CBCT三维头影测量结果显示,GoR-Me、Go L-Me、Co L-A、CoR-A、Go L-Gn、CoR-Gn测量值两种测量方法有显著性差异(P<0.001)。结论三维头影测量不能简单的将二维头影测量的分析方法和标准值机械地复制使用。三维头影测量更为真实地反映了颅颌面的形态,随着标准测量方法的完善和正常人群标准数据库的建立,可以较好地应用于临床。
Objective To evaluate the application of three-dimensional cephalometric analysis using CBCT in orthognathic surgery of skeletal Class In malformation patients. Methods Twenty adult Class III patients treated with orthognathie surgery received CBCT scan one week before and after surgery. The three-dimensional models were then reconstructed by simplant software. Three-dimensional McNamara landmarks were defined and measurement was performed. The traditional two-dimensional cephalometry was performed at the same time. The data were compared between the two-dimensional and three-dimensional cephalometry. Results There was significant difference in GoR-Me, CoL-Me, CoL-A, CoR-A, GoL-Gn and CoR-Gn between the two cephalometry （ P 〈 0. 001 ）. Conclusion The landmarks of three- dimensional cephalometry were not exactly the same as that of the traditional two-dimensional cephalometry. The three- dimensional eephalometry is more realistic to reflect the craniofacial morphology.
出处
《北京口腔医学》
CAS
2016年第6期323-327,共5页
Beijing Journal of Stomatology
基金
首都医科大学基础临床科研合作课题(10JL-L09)
关键词
CBCT
维头影测量
骨性Ⅲ类错拾畸形
CBCT
Three-dimensional cephalometry
Skeletal Class III malformation
