可摘局部义齿支托的计算机辅助设计  

Computer-aided design for occlusal rest of the removable partial denture

作　　者：韩静[1] 吕培军[1] 王勇[1] 

机构地区：[1]北京大学口腔医学院·口腔医院计算机应用中心,北京100081

出　　处：《北京大学学报（医学版）》2010年第1期111-113,共3页Journal of Peking University:Health Sciences

基　　金：国家高技术研究发展计划专项经费(2006AA03Z446)资助~~

摘　　要：目的:探讨可摘局部义齿支托的设计方法,为进一步开发可摘局部义齿专用设计软件探索路线。方法:应用层析扫描仪扫描牙列缺损石膏模型获得三维点云数据。以三维设计软件唐龙系统为平台,用C++语言开发支托设计模块。提取基牙点云数据,首先以投影法确定支托组织面轮廓线,然后分别构建组织面及抛光面,形成由两张曲面相互拼合成的一个封闭实体。结果:应用新开发的支托设计模块设计支托操作简单,形成的支托表面光顺平滑,外形凸度与牙体表面一致,可达到临床要求。结论:以唐龙系统为平台开发的支托设计模块设计自动程度比通用软件大幅提高,设计者不需要掌握专门的计算机知识,适合口腔医生使用。支托建模技术路线具有一定普遍性,对最终完成可摘局部义齿专用设计软件的开发具有重要意义。Objective：To explore the route of automatic computer-aided design for occlusal rest of the removable partial denture.Methods： A new module for the design of occlusal rest was developed.The three-dimensional data of a partially dentate dental cast was obtained and imported into the new module.The contour of the occlusal＇s tissue surface was identified.Then,the tissue surface and polished surface were constructed respectively and connected to each other to form an integrated entity.Results： The surface of the occlusal rest was smooth and the curvature matched that of the surrounding area of the abutment tooth.The accuracy was satisfying.Conclusion： Design of occlusal rest was much more convenient and time-saving using the newly developed module.The future development of special software package for the design of removable partial denture will benefit from it.

关 键 词：计算机辅助设计 成像 三维 义齿基托 

分 类 号：R783.6[医药卫生—口腔医学]