The study of a computer aided artificial teeth arrangement of complete denture
CHENG Xiangrong
（Department of Prosthodin-dics, College of Stomatology,Hubei Medical University ,Wuhan 430070, China）
HUA Xianming, Hua Zhongping
【Abstract】 Objective To develop a system of computer aided complete denture design(CACDD).Methods After 3 dimensional measurement,data process and making model of a edentulous model, artificial teeth and the maxillomandibular bite plate, on the position of centric relation, the artificial teeth were arranged according to the principle and demand of the complete denture's teeth arrangement. The relation of teeth and occlusion were adjusted by Affine and Projection transformation.Results (1)The maxillomandibular visual base on the position of centric relation were made，its mathematics model is B-Spline curve surface of the double third power.(2) The artificial teeth arrangement and 3 dimensional show of the complete denture were achieved.Conclusion This system can provide a feasible tool for a computer aided complete denture design and teaching.
【Key words】 Computer ； Complete denture ； Eenture design ； Artificial teeth
近年来，随着三维(3D)测量技术和计算机辅助设计(computer aided design,CAD)软件的发展，测量并记录口腔软、硬组织和颌位关系的3D方法迅速提高,计算机辅助设计与辅助制作(CAD/CAM)系统已广泛应用于口腔医学的临床和教学。以往的文献中有关CAD/CAM系统应用于全口义齿方面的报道很少［1，2］，而且这些报道主要是理论上的专家系统。本项研究的主要工作是应用三维座标测量机（3 dimensional coordinate measuring machine,3DCMM）获取无牙颌模型、人工牙和具有正中关系位的上、下
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