基于质点弹簧模型的牙齿移动仿真  

Simulation of tooth movement based on spring-mass model

作　　者：王奇峰[1] 廖文和[1] 俞青[2] 郝国栋[1] 孙全平[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]南京市口腔医院修复科,江苏南京210008

出　　处：《东南大学学报（医学版）》2009年第6期483-486,共4页Journal of Southeast University(Medical Science Edition)

基　　金：教育部博士点基金项目(20070287055);江苏省科技攻关项目(BE2005014)

摘　　要：目的:研究口腔数字化正畸矫治中的牙齿虚拟移动仿真技术,为制作透明隐形矫治器过程中一系列母模的数字化建模设计作准备。方法:首先,利用三维非接触测量设备采集全口牙石膏模型1∶1的三维点云数据,并构建数字化全口牙数字模型;然后采用质点弹簧模型模拟牙齿的虚拟移动;最后采用VC++6.0和Hoops图形库开发虚拟仿真程序软件。结果:牙齿移动、旋转的仿真方法基本可以满足数字化正畸牙齿虚拟移动的要求。结论:使用光学测量设备采集标准牙模石膏数据并重构出模型曲面,采用质点弹簧模型对牙齿移动进行仿真的方法是可行的、有效的,为研发国产正畸透明隐形矫治器的制作积累了经验。Objective To explore the simulation technology of tooth movement during the virtual orthodontic treatment and help the doctor rapidly design the shape of invisible tooth aligner. Methods Firstly, a plaster model was measured by the 3D-optical measuring system and the mesh surface was reconstructed from cloud data. Secondly, the spring-mass model was used to simulate the tooth displacement. Finally, the software prototype was developed using VC ＋ ＋ 6.0 and Hoops graphics library. Results The movement and rotation of tooth met the requirement of the digital orthodontic treatment. Conclusion The method of tooth movement based on spring-mass model is feasible and efficient, which provides the basis for the simulation and planning of orthodontic treatment.

关 键 词：三维测量 牙齿移动 弹簧质点模型 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术] R783.3[自动化与计算机技术—计算机科学与技术]