Integration of 3-D shapes of dentition and facial morphology using a high-speed laser scanner.

Integration of 3-D shapes of dentition and facial morphology using a high-speed laser scanner.
复制标题

使用高速激光扫描仪整合 3D 牙列形状和面部形态。

DOI：
--
复制
发表时间：
2001
期刊：
The International journal of prosthodontics
影响因子：
--
通讯作者：
J. Takahashi
J. Takahashi
中科院分区：
--
文献类型：
--
作者：
M. Nagao;T. Sohmura;S. Kinuta;T. Kojima;K. Wakabayashi;T. Nakamura;J. Takahashi

文献摘要

被引文献

相似文献

目的 本研究的目的是开发一种将高速激光扫描仪测量的牙列和面部形态的三维数据整合在一起，并用计算机图形可视化的方法。对积分的准确性也进行了检验。 材料和方法 用带变焦镜头的高速激光扫描仪测量上、下牙模型和受试者面部的三维形态。作为整合牙列和面部坐标的接口，设计了一种固定在咬合记录板上的口外标志板。将其应用于上、下牙模型之间，并与受试者进行测量。尝试通过重合接口的数据进行集成。利用标志板的表面形状和附着角度等条件检查积分的准确性。 结果 完成了牙列和面部数据的集成。它们之间的三维关系可以通过计算机图形学在任何方向或任何截面上可视化。为了获得最佳的积分精度，在咬合记录板上以45度角附着的平面和正弦波混合形状的标志板显示出最合适的结果。 结论 提出了一种利用三维激光扫描仪测量牙列和面部的三维数据的集成方法，该方法具有较高的精度。
PURPOSE The purpose of this study was to develop a method to integrate three-dimensional data of dentition and facial morphology measured by a high-speed laser scanner, and visualize them by computer graphics. The accuracy of integration was also examined. MATERIALS AND METHODS The 3-D shapes of upper and lower dental casts and the face of a subject were measured by a high-speed laser scanner with zoom lens facility. As an interface to integrate the coordinates between dentition and face, an extraoral marker plate attached to the occlusal record plate was devised. It was applied between the upper and lower dental casts, and with the subject, and measured. Integration was attempted by coinciding the data of the interface. The accuracy of integration was examined using the conditions of the marker plate such as surface shape and attachment angle. RESULTS Integration of the data of dentition and face was accomplished. The 3-D relationship between them could be visualized in any direction or section by computer graphics. For optimal accuracy of integration, the marker plate with a mixed shape of flat and sinusoidal wave attached at 45 degrees to the occlusal record plate showed the most appropriate results. CONCLUSION An original method to integrate the 3-D data of dentition and face measured by 3-D laser scanner was developed and shown to have acceptable accuracy.