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[Development of a video system for three-dimensional cephalometry and dental cast analysis]
1Department of Orthodontics, Beijing Hospital for Stomatology, Capital University of Medical Sciences, Beijing 100050, China.
Objective:
The purpose of this article is to introduce the outline of our newly developed video system for three-dimensional cephalometry and dental cast analysis.
Methods:
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.
Results:
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.
Conclusions:
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.