title: [The reliability and accuracy of the digital models reconstructed by cone-beam computed tomography].
abstract: OBJECTIVE
  To evaluate the reliability of the digital models scanned by cone-beam computed tomography (CBCT).
  
  
  METHODS
  Forty plaster models of patients with orthodontic treatment were selected. These plaster models were scanned and measured by 3DX cone beam CT, compared with manual measurement via concordance correlation coefficient (CCC) and mean difference (MD).
  
  
  RESULTS
  The CCC of all the measurement was from 0.847 to 0.993. The value of MD of all the measurement was below 0.25mm except CFF6, PWF5 and PWF6, which was 0.34mm, 0.63mm and 1.49mm, respectively.
  
  
  CONCLUSIONS
  The reliability and accuracy of the digital models scanned by cone-beam CT is very high. The accuracy of measurement of the dental cusp is the highest, the dental fossa is the second, and the lowest point of palatal gingival is the third.
authors: Department of Orthodontics, Shanghai Jiao Tong University School of Medicine, Shanghai, China. huxinyi618@163.com
authors: Xin-yi
authors: XY
authors: Hu
authors: Xiao-gang
authors: XG
authors: Pan
authors: Wen-lan
authors: WL
authors: Gao
authors: Yao-mu
authors: YM
authors: Xiao
mesh_terms: D054893:Cone-Beam Computed Tomography; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D003765:Models, Dental; D009970:Orthodontics; D015203:Reproducibility of Results