下颌升支矢状劈开截骨术后下颌骨短期稳定性的三维分析  

Three-dimensional Evaluation of Mandibular Stability during Intermaxillary Fixation after Bilateral Sagittal Split Ramus Osteotomy Surgery

作　　者：焦星琦 李阳[1] 伊彪[1] JIAO Xingqi;LI Yang;YI Biao(Department of Oral and Maxillofacial Surgery,Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081,China.)

机构地区：[1]北京大学口腔医学院·口腔医院口腔颌面外科,国家口腔疾病临床研究中心,口腔数字化医疗技术和材料国家工程试验室,口腔数字医学北京市重点实验室,北京100081

出　　处：《口腔医学研究》2021年第10期931-935,共5页Journal of Oral Science Research

摘　　要：目的:本研究利用三维测量方法分析下颌骨在下颌升支矢状劈开截骨术后短期内的复发趋势。方法:收集在北京大学口腔医院接受正颌-正畸联合治疗并行下颌升支矢状截骨手术的患者共49例,分为下颌前徙患者22例,下颌后退患者27例,收集术前4 d(T0)、术后4 d(T1)、术后4~6周(T2)、3个月(T3)的CBCT数据,利用计算机辅助设计软件Pro Plan进行三维头颅重建,建立坐标系并测量下颌骨相关指标。利用SPSS 20.0软件对T1、T2时的测量结果进行配对t检验。结果:在接受下颌升支矢状劈开截骨术的患者中,下颌前徙患者的下颌骨在B点、Pg点存在水平向的复发趋势,下颌平面存在顺时针旋转的倾向。下颌后退患者的下颌骨在B点存在水平向的复发趋势,Pg点存在水平向和垂直向的复发趋势。结论:下颌升支矢状劈开截骨术后术后下颌骨在短期内存在复发倾向,但在临床可接受范围内。Objective:To analyze the short-term relapse tendency of mandible after bilateral sagittal split ramus osteotomy(BSSRO)surgery with three-dimension measurement.Methods:CBCT images of forty-nine patients seeking for orthognathic surgery were collected in the study.The collection time was four days preoperatively(T0),four days postoperatively(T1),four to six weeks postoperatively(T2),and three months postoperatively(T3).A three-dimensional analytic method to measure mandible was set up with Pro Plan software.The study measured and analyzed the indicators and angles to describe the mandibular position and orientation.Results:For mandibular advancement patients,the measurements showed a significant difference in B and Pg in horizontal axis during short term(T1-T2).The mandibular plane tended to have a clockwise rotation.For mandibular setback patients,the measurements showed a significant difference in B in horizontal axis and Pg in horizontal and vertical axis.Conclusion:There was a three-dimensional relapse tendency of mandible in short-term after BSSRO,however,in the acceptable region.

关 键 词：下颌升支矢状劈开截骨术 下颌骨 三维分析稳定性 

分 类 号：R78[医药卫生—口腔医学]