Development of the CAD/CAM system for occlusal laminate veneer using the construction of occlusal curved surface

本研究采用计算机辅助设计/计算机辅助制造(CAD/CAM)技术制作咬合贴面。应用牙模高速测量系统对正常牙合和错(牙合)牙合受试者进行测量分析。因此，我们可以通过用多项式表示牙弓形状以及比较数值来定量地评价牙弓形状的差异。此外，在使用咬合贴面进行治疗时，有必要建立咬合平面。因此，我们使用非接触式三维测量系统来研究面部和牙列的三维数据的统一。结果，我们在0.3毫米的误差中取得了统一的成功。利用这种方法，可以定量地分析面部和牙列的物理关系，为贴面设计提供有用的数据。对材料A进行了三维有限元强度分析，为贴面强度分析提供了基础数据

This study was done to prepare occlusal laminate veneer by CAD/CAM. We measured and analyzed the subjects of normal occlusion and malocclusion with using high speed measuring system for dental cast. As a result, we made it possible to evaluate the difference of the form in a fixed quantity with showing the dental arch form by polynomial expression as well as comparing numerical value. Furthermore, it is necessary to establish occlusal plane when we treat it with occlusal laminate veneer. Therefore, we use noncontact three-dimensional measuring system to study unification of three-dimensional data of face and dentition. As a result we succeed in unity in 0.3 mm error. By using this method, it became possible to analyze physical relationship of face and dentition in a fixed quantity and get a useful data of designing of laminate veneer. About materials A we analyzed the strength of metal-free crown by 3-D finite element analysis and got a basic data of strength analysis of laminate veneer