摘要
我们试验了利用VR技术进行虚拟咬合仿真制作的全部过程。首先,采用光学三维测量仪对上下颌石膏模型进行数字化,通过预处理获取有效的三角网格曲面模型;其次,对咬合运动模型进行合理的简化,分解为一系列的平移运动和旋转运动;通过动态刷新完成开闭口运动、侧移运动的计算机运动仿真,可视化地观察咬合运动;然后利用模型碰撞检测算法动态地计算咬合接触位,并详细地分析了咬合接触时的咬合点位置分布和咬合剖切面上的咬合点接触关系;最后讨论了目前虚拟咬合仿真存在的问题和今后研究的方向。
This paper presents our work on the research process of virtual articulator simulation. Firstly, plaster models of upper jaw and low jaw are measured by 3D-optlcal measuring system and processed to get the available data. Secondly, complex physical modeling of the jaw motion is simplified and decomposed to a series of position transform, such as translation, rotation, etc.. Thirdly, opening/closing movement and laterotrusion is simulated by real-time updating display. Fourthly, the efficient collision detection algorithm is applied to dynamically compute occlusal contact regions and cutaway view. Finally, the current shortage of the virtual articulator simulation is discussed in detail and research prospect is forecasted.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2007年第5期1073-1078,共6页
Journal of Biomedical Engineering
基金
国家(863计划)资助项目(2005AA420240)
江苏省科技攻关项目资助(BE2005014)
南京市科技发展计划项目资助(200504022)
南京市医学科技发展计划项目资助(ZKX0420)
关键词
虚拟牙合架
牙合架运动仿真
咬合接触
碰撞检测
Virtual articulator Jaw articulation simulation Occlusal contact Collision detection