title: [Development of a video system for three-dimensional cephalometry and dental cast analysis].
abstract: 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.
authors.affiliation: Department of Orthodontics, Beijing Hospital for Stomatology, Capital University of Medical Sciences, Beijing 100050, China.
authors.forename: B
authors.initials: B
authors.lastname: Wang
authors.forename: S
authors.initials: S
authors.lastname: Li
authors.forename: L
authors.initials: L
authors.lastname: Zhou
mesh_terms: D002508:Cephalometry / Q000379:methods*; D003735:Dental Casting Technique; D006801:Humans; D021621:Imaging, Three-Dimensional; D003765:Models, Dental; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014743:Videotape Recording