CAD/CAM快速成型个性化桩核设计制作  

Personalized design and rapid prototyping of tooth piles using CAD/CAM

作　　者：唐涛[1] 李敏[1] 王君英[2] 

机构地区：[1]清华大学医院口腔科,北京100084 [2]清华大学精密仪器与机械学系,北京100084

出　　处：《清华大学学报（自然科学版）》2013年第2期195-199,共5页Journal of Tsinghua University(Science and Technology)

基　　金：清华大学医学科学裕元基金资助项目(2002400575)

摘　　要：为加快临床应用,进行快速成型个性化桩核的CAD/CAM设计制作和探讨。该文研究工作由计算机建模、实体加工、力学性能检测3部分构成。首先,使用三维激光扫描仪对前牙残根残冠的桩核蜡型进行数据采集,获取三维点云数据,并利用法国Dassault公司CATIA软件系统对三维扫描数据进行处理,编写三维桩核形态设计模块,进行桩核的建模。然后,将完成的CAD数据储存为STL格式文件,该格式亦为快速成型设备接口的通用数据格式。用选定的树脂材料根据设计完成的桩核数据快速成型,分别加工生成试体A与试体B(带孔的)个性化树脂桩核,将金属加固丝粘结于实体B的个性化桩核之中以增加强度。最后,测试、对比这两种个性化桩核的力学性能,获取相关数据。测试结果表明:两种试体均具有满足临床使用要求的力学性能。研究表明:CAD快速成型技术制作个性化桩核具有可行性,将为桩核CAM的完善提供空间。Rapid prototyping of personalized tooth piles with CAD/CAM design was studied to accelerate the clinical application. Three dimensional point cloud data were obtained using a three-dimensional laser scanner to scan an anterior residue root and residue crown post-core wax-model. Dassault Company＇s CATIA software system was used to process the three dimensional scanning data and construct the post core model. The CAD data were saved in STL format files, which is also the common data format for rapid prototyping of device interface. Rapid prototyping was then used to fabricate sample A entity and sample B, a personalized resin post with holes bonded with reinforcement wires. Mechanical properties of samples A and B were analyzed. Tests show that the mechanical properties of the two samples meet the requirement of clinicalapplication and that computer-aided design （CAD） based personalized post and core rapid prototyping technology has feasibility for CAM improvement.

关 键 词：快速成型(RP) CAD 个性化桩核 抗折力 

分 类 号：R781[医药卫生—口腔医学] TH164[医药卫生—临床医学]