基于解剖特征的数字化嵌体设计及程序的初步实现

Digital inlaid design based on anatomical characteristics and preliminary implementation of its program

目的:应用逆向工程软件,探索一条开发嵌体CAD软件的技术路线,验证其加工可行性,并尝试应用二次开发软件平台进行具有较高自动化设计能力的嵌体CAD软件程序的研发。方法:首先在标准冠点云数据上创建坐标系、标志点/线以及特征曲线,建立参数化标准冠数据集,然后使用线激光扫描仪进行嵌体预备体、邻牙及咬合记录的数据采集并进行三维数据建模,再应用Surfacer 11.0软件,基于建立的参数化标准冠数据集,通过提取洞型边缘线、构建嵌体组织面、构建嵌体外表面和调几个主要步骤,完成MOD型嵌体的几何构建,并进行加工及模型试戴。基于Surfacer 11.0开发平台,进行嵌体CAD自动化软件程序的开发。结果:建立了一条嵌体CAD技术路线,完成了设计结果的加工,初步开发了MOD型嵌体CAD专用软件程序。结论:基于逆向工程软件Surface 11.0软件的嵌体CAD技术路线及其加工具有可行性,并且基于此设计路线可开发具有较高自动化设计能力的嵌体CAD软件程序。

Objective：To explore the technical guideline of inlays computer aided design（CAD） for further development,to test the feasibility of processing for the design results of the technical guideline,and to assist co-operation with automatic inlay CAD software development.Methods： On the basis of point cloud data of right mandibular first molar of standard crown,we established the coordinate system,the landmarks and lines and the characteristic curves.A dental cast of right mandibular first molar MOD-inlay of an individual normal occlusion was scanned.The following objects were digitized： prepared tooth、neighbor teeth and intercuspal bite record.On the basis of parametric standard crown established in the research,using Surfacer 11.0,we achieved the reconstruction of MOD-inlay by extracting margin line,constructing tissue surface,constructing outer surface and occlusal grinding,then the design result was processed and try-in on the cast.We also developed automatic inlay CAD software based on the guideline of inlay CAD.Results： The guideline of inlay CAD was established,the design results were processed and an automatic inlay CAD software was developed on basis of Surfacer 11.0.Conclusion： It is a feasible method to establish technical guideline of inlay based on reverse engineering technology and process its design result,and a automatic inlay CAD software could be developed based on the technical guideline.