全口义齿在架上前伸运动的计算机三维模拟

Three-dimensional simulation of protrusive movement for complete denture on articulator

目的:探索建立能将三维模拟全口义齿在架上进行前伸运动的算法模块。方法:应用激光三维扫描和重建技术,建立全口义齿人工牙列模型,采用Matlab6.5数学计算分析软件,并结合空间解析几何原理,对全口义齿在牙合架上的前伸运动进行数学建模和运动模拟。结果:建立了用于模拟全口义齿在牙合架上三维前伸运动的算法模块,并在实际病例进行验证。结论:该方法的设计思想可行,为定量研究义齿动态咬合情况奠定了基础。

PURPOSE： This study was designed to investigate an algorithm model, which can simulate the protrusive movement for complete denture on articulator. METHODS： A typical edentulous case with one-year complete denture was selected for this study. A new complete denture remounted on articulator Hanau H2 was scanned and reconstructed by three-dimensional technique. With the geometrical parameters of the articulator, a series of mathematical equations describing the three-dimensional protrusive movement of complete denture on articulator were solved by programming in Matlab6.5 （a language for technical computing）. RESULTS： The algorithm model to simulate the protrusive movement of complete denture on articulator was established and was testified by the true case in this study. CONCLUSIONSt This study verified the use of a new method to quantitatively study the protrusive movement simulation of complete denture in terms of spatial coordinates. And the quantitative simulation may play an important role in further research of the dynamic occlusion to improve dental restorative procedures.