Use of an ultrahigh-speed laser scanner for constructing three-dimensional shapes of dentition and occlusion.
Use of an ultrahigh-speed laser scanner for constructing three-dimensional shapes of dentition and occlusion.
复制标题
使用超高速激光扫描仪构建牙列和咬合的三维形状。
DOI：
10.1067/mpr.2000.109786
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
J. Takahashi
中科院分区：
文献类型：
--
作者：
T. Sohmura;T. Kojima;K. Wakabayashi;J. Takahashi
问题声明
牙模型三维形态的获取有助于定量评价咬合关系的诊断和治疗。
目的
本研究展示了通过使用超高速激光扫描仪和最初开发的测角器获取数据，使用这些工具从多个方向测量牙模型的整个三维形状，以及使用计算机连接数据测量以重建模型的咬合。
材料和方法
使用发射线激光并且仅在0.6秒内完成1次扫描的市售设备。为了补偿未测量的区域，在原始测角器上从4个方向测量管型，并进行数据连接以获得整个图像。此外，试图通过将上铸型数据传输到下铸型来重建上铸型和下铸型之间的闭塞。
结果
通过数据连接，构建了上、下铸件的整体形状，再现了特征结构。数据连接是令人满意的平面，但不太准确的倾斜表面。完成了上下石膏之间的咬合重建。然后，可以用计算机图形从任意方向和截面可视化遮挡。
结论
使用超高速测量系统和原始测角器完成牙模型的整个三维形状的构建和咬合的重建。这些结果将有助于临床应用，如咬合的计算机诊断和治疗，以及用计算机数据代替牙科诊所的石模。
STATEMENT OF PROBLEM
Acquisition of the 3-dimensional shape of dental casts is useful for quantitative evaluation of the diagnosis and treatment of occlusion.
PURPOSE
This study demonstrated the acquisition of data through the use of an ultrahigh-speed laser scanner and an originally developed goniometer, the use of these tools to measure the entire 3-dimensional shape of the dental cast from multiple directions, and the connection of the data measurements to reconstruct the cast's occlusion with the use of a computer.
MATERIAL AND METHODS
A commercially available apparatus that emits a line laser and completes 1 scan in only 0.6 seconds was used. To compensate for the unmeasured region, the cast was measured from 4 directions on the original goniometer, and the connection of data to obtain the entire image was carried out. Further, the reconstruction of the occlusion between the upper and lower casts was attempted by transferring the upper cast data to the lower cast.
RESULTS
By the data connection, the entire shape of the upper and lower casts was constructed, and the characteristic structure was reproduced. The data connections were satisfactory for the flat surfaces but less accurate for the inclined surfaces. Reconstruction of the occlusion between the upper and lower casts was accomplished. It was then possible to visualize the occlusion from arbitrary directions and sections with computer graphics.
CONCLUSION
The construction of the entire 3-dimensional shape of a dental cast and the reconstruction of the occlusion were accomplished using an ultrahigh-speed measurement system and original goniometer. These results will be useful for clinical applications such as computerized diagnoses and treatment of occlusion, and for the replacement of the stone casts in the dental office by computerized data.