Research and Implementation for Parametric Design of Tooth Preparation
1 College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2 National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081, China
Abstract：Tooth preparation is a key part in the treatment of dental hard tissue disease. In order to develop a new mode of tooth preparing operation and realize automatic preparation, in this paper, we studied the computer aided method of complexshaped and multipleconstrained preparation generation and parametric modification. First, for the characterization of triangular mesh, we proposed parametric operations of preparation generation by analyzing the relationship of dimension chains. By the operations, an wholeceramic preparation model within the standard was generated. Meanwhile, a historybased approach was used to realize the preparation’s dynamic modification. Twenty instances of molar and premolae showed that our method worked well in preparation’s generation and parametric modification. The model was conformed with maximum design deviation of 48 μm by the thirdparty software Geomagic Studio, reaching the clinical adhesion requirement of less than 100 μm.
宋英龙1 戴宁1*许治1 孙玉春2. 牙齿预备体参数化设计研究与实现[J]. 中国生物医学工程学报, 2014, 33(1): 71-78.
SONG Ying Long1 DAI Ning1*XU Zhi1 SUN Yu Chun2 LV Pei Jun2 YUAN Fu Song2 . Research and Implementation for Parametric Design of Tooth Preparation. journal1, 2014, 33(1): 71-78.
［2］Bruyns CD,Seager S,Menon A,et al.A survey of interactive mesh cutting techniques and a new method for implementing generalized interactive mesh cutting using virtual tools［J］.The Journal of Visualization and Computer Animation , 2002,13: 21-42.
［3］Pernot JP,Moraru G,Veron P.Filling hole in meshes using a mechanical model to simulate The curvature variation minimization［J］.Computers Graphics , 2006,30:892-902.
［4］Qu Xiuzhi,Stucker B. A 3D surface offset method for STLformat models ［J］.Rapid Prototying Journal,2003,9(3):133-141.
［5］孟祥旭,徐延宁.参数化设计研究［J］.计算机辅助设计与图形学学报, 2002 ,14(11):1086-1090.
［6］Lin VC,Gossard DC,Light RA.Variational geometry in computeraided design［J］. Computer Graphics,1981,15(3):171-177.
［7］Fudos I, Hoffmann CM. A graphconstructive approach to solving systems of geometric constraints［J］. ACM Transaction on Graphics, 1997,16(2):179-216.
［8］Monedero J. Parametric design:a review and some experiences［J］. Automation in Construction,2000,9:369-377.
［9］Bettig B,Hoffmann CM.Geometric constraint solving in parametric computer aided design［J］.Journal of Computing and Information Science in Engineering,2011, 11:211-218.［10］刘荣森.全瓷修复的牙体预备［J］.中华老年口腔医学杂志, 2009,7(3):177-179.