应用快速成型制造技术制作个体化桩核的实验研究  

Exploration on manufacturing individualized post and core with RPM technique

作　　者：王忠东[1] 吴建忠[2] 李国华[3] 龚振宇[3] 陈炜[1] 吴纪楠[1] 凌均棨[4] 刘亚雄[5] 

机构地区：[1]中山市人民医院口腔医疗中心 [2]中山市技师学院,讲师广东528400 [3]南京军区福州总医院口腔科,副主任医师福建350025 [4]中山大学光华口腔医学院,院长教授主任医师广东510080 [5]西安交通大学,副教授陕西710079

出　　处：《口腔颌面修复学杂志》2013年第1期6-10,共5页Chinese Journal of Prosthodontics

基　　金：福建省青年人才项目(项目编号:2008F3088);中山市科技计划项目(项目编号:2006A013)

摘　　要：目的:探讨应用快速成型制造(rapid prototyping and manufacturing,RPM)技术制作个体化桩核的可行性,以期为临床应用奠定基础。方法:以CT影像为数据源,通过Mimics10.0软件处理,建立残冠/残根数字模型;通过Geomagic 9.0软件构建桩核体三维数字模型(库);应用反求软件得到残冠/残根点云数据,对桩核体及根部进行曲面设计,借助CAD软件对曲面模型进行实体化操作及工艺结构设计,将其轮廓数据转换为快速成型系统中的轮廓数据,快速成型制造出个体化桩核,通过测量桩核的边缘浮出量和适合性检测其可行性。结果:RPM制作的所有桩核均可精密就位,效果满意。制作桩核边缘浮出量(45.95±8.09)μm;适合性:在根管口处分别为(79.33±9.69)μm,在根管中部分别为(80.68±10.74)μm,在根管底部分别为(82.05±11.46)μm。结论:RPM技术可用于制作个体化桩核的设计和制造,为个体化修复开辟了新的途径,具有良好的应用前景。Objective： To evaluate the feasibility of designing and fabricating individualized post and core with RPM technique.Methods： 3-D digital model of residual root and residual crown was established with CT scan data in software Mimics.3-D digital model of Post and core was also established with CT scan data in software Geomagics.Individualized post and core were designed and manufactured with multi-step procedure of Reverse Engineering,Rapid Prototyping and casting.Results： The individualized posts and cores fabricated by this method were successfully inserted to teeth in vitro and obtained satisfactory results.The marginal fitness of the post and core formed by RPM method was（45.95±8.09）μm.The internal fitness of the post and core made by RPM method was good.The gap between the post and the die was（79.33± 9.69）μm by RPM method at the root canal orifice,80.68±10.74μm at the middle area of root canal,82.05±11.46μm at the bottom area.Conclusion： Reverse Engineering combining with Rapid Prototyping could accomplish the design and manufacturing of individualized post and core for the prosthetic treatment of residual root and residual crown,which may have a promising prospect.

关 键 词：残冠 残根 桩核 个体化 快速成型 反求工程 

分 类 号：R783[医药卫生—口腔医学]