可摘局部义齿支架三维CAD方法的初步研究

A preliminary study on the design of removable partial denture framework using CAD method

目的:通过对KennedyⅡ类2亚类可摘局部义齿支架的三维计算机辅助设计,探索其CAD方法。方法:采用基于点云及曲线曲面的混合建模技术,按照临床设计原则,在牙列缺损三维重建模型上对卡环、支托、舌杆及加强网等支架部件分别构建其组织面、磨光面等,完成支架的三维设计。结果:初步建立了可摘局部义齿支架的三维计算机辅助设计方法,得到了个性化的局部义齿支架的三维几何模型。结论:混合建模技术可以实现可摘局部义齿支架的三维计算机辅助设计。

Objective：To investigate the feasibility of 3-D computer aided design （CAD） for the framework of a mandibular Kennedy Class Ⅱ , Modification 2 arch. Methods：In terms of the principle of clinical design, the 3-D framework was built with the technique of mixed model of points cloud, curves and surfaces on the reconstructed model of a partially edentulous cast, including the tissue surfaces and polishing surfaces of every component, such as clasp, rest, lingual bar and mesh construction, etc. Results：Preliminarily, a CAD method for 3-D RPD framework design was established and a individualized RPD framework 3D geometric model was set up. Conclusion： CAD for RPD framework design based on the mixed model of points cloud, curves and surfaces is feasible.