下颌重建钛板虚拟预成型技术及其精度分析  

VIRTUAL PREFORMING METHOD FOR MANDIBULAR RECONSTRUCTION TITANIUM PLATE AND ITS PRECISION

作　　者：梁烨[1] 张佳楫 蒋灿华[1] 左国坤[2] 王洁[3] 闵安杰[1] LIANG Ye;ZHANG Jiaji;JIANG Canhua;ZUO Guokun;WANG Jie;MIN Anjie(Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, China)

机构地区：[1]中南大学湘雅医院口腔医学中心口腔颌面外科,湖南长沙410008 [2]中国科学院宁波材料技术与工程研究所 [3]中南大学湘雅医学院

出　　处：《精准医学杂志》2020年第5期389-393,399,共6页Journal of Precision Medicine

基　　金：国家自然科学基金资助项目(81901065);湖南省科技厅重点研发项目(2017SK2161);湖南省自然科学基金项目(2018-JJ3850,2017JJ2392);湖南省卫生健康委科研计划项目(B2019192,B20180054);长沙市科技计划项目(kq1706072)。

摘　　要：目的建立下颌重建钛板虚拟预成型的方法并分析其精度。方法以逆向建模技术重建成品下颌重建钛板的数字化模型,采用解析几何和离散仿真等方法,推导出个性化仿真弯制算法,在虚拟空间中对钛板进行数字化预成型,检测其与下颌骨表面的贴合度,并与手工弯制方法进行对比。结果数字化虚拟预成型钛板与下颌骨表面的距离显著小于手工弯制钛板与下颌骨表面的距离,差异具有统计学意义(P<0.05)。结论本研究建立了一种能够对下颌重建钛板进行虚拟预成型的方法,精度优于手工弯制,可为后续自动化钛板预成型机器人的研制提供帮助。Objective To establish a virtual preforming method for mandibular reconstruction titanium plate,and to analyze its accuracy.MethodsReverse modeling technique was used to reconstruct the digital model of finished mandibular reconstruction titanium plate,and then analytic geometry and discrete simulation were used to derive the personalized simulation bending algorithm.Digital preforming was performed for the titanium plate in virtual space,and the degree of fitting was measured and compared with that of the manual bending method.\Results\The distance between the digital virtually preformed titanium plate and the surface of the mandible was significantly smaller than that between the manually bent titanium plate and the surface of the mandible(P<0.05).\Conclusion\This study establishes a virtual preforming method for mandibular reconstruction titanium plate,which is more accurate than manual bending,and provides help for the subsequent development of automatic preforming robot for titanium plate.

关 键 词：下颌骨重建术 骨板 钛 数字化模型 算法 计算机模拟 机器人 

分 类 号：R782.2[医药卫生—口腔医学] R319[医药卫生—临床医学]