Wang B, Li S, Zhou L
Department of Orthodontics, Beijing Hospital for Stomatology, Capital University of Medical Sciences, Beijing 100050, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2000 May;35(3):230-2.
The purpose of this article is to introduce the outline of our newly developed video system for three-dimensional cephalometry and dental cast analysis.
The video measuring technique was utilized in the field of dentistry in our study. Two CCD cameras were used to capture the images both of the dental cast and headfilms. The dental cast analysis and three-dimensional cephalometry shared a set of operating system. The three-dimensional reconstruction was based on the LAT and PA films.
The measurement error of dental cast analysis is less than 0.09 mm, and the error of three-dimensional cephalometry is less than 0.45 mm.
The clinical application suggests that the use of our system is feasible not only for clinical evaluation of malocclusion but also for saving time necessary for treatment planing and diagnosis.
本文旨在介绍我们新开发的用于三维头影测量和牙模分析的视频系统概要。
在我们的研究中，视频测量技术应用于牙科领域。使用两台电荷耦合器件（CCD）相机来获取牙模和头颅侧位片的图像。牙模分析和三维头影测量共享一套操作系统。三维重建基于正位（PA）片和侧位（LAT）片。
牙模分析的测量误差小于0.09毫米，三维头影测量的误差小于0.45毫米。
临床应用表明，使用我们的系统不仅对于错牙合畸形的临床评估是可行的，而且对于节省治疗计划和诊断所需的时间也是可行的。
