title: Comparison of conventional lateral cephalograms with corresponding CBCT radiographs.
abstract: OBJECTIVE
  This study was performed to assess the compatibility of cone beam computed tomography (CBCT) synthesized cephalograms with conventional cephalograms, and to find a method for obtaining normative values for three-dimensional (3D) assessments.
  
  
  METHODS
  The sample group consisted of 10 adults with normal occlusion and well-balanced faces. They were imaged using conventional and CBCT cephalograms. The CBCT cephalograms were synthesized from the CBCT data using OnDemand 3D software. Twenty-one angular and 12 linear measurements from each imaging modality were compared and analyzed using paired-t test.
  
  
  RESULTS
  The linear measurements between the two imaging modalities were not statistically different (p>0.05) except for the U1 to facial plane distance. The angular measurements between the two imaging modalities were not statistically different (p>0.05) with the exception of the gonial angle, ANB difference, and facial convexity.
  
  
  CONCLUSIONS
  Two-dimensional cephalometric norms could be readily used for 3D quantitative assessment, if corrected for lateral cephalogram distortion.
authors.affiliation: Department of Oral and Maxillofacial Radiology, College of Dentistry, Yonsei University, Seoul, Korea.
authors.forename: Chang-Seo
authors.initials: CS
authors.lastname: Park
authors.forename: Jae-Kyu
authors.initials: JK
authors.lastname: Park
authors.forename: Huijun
authors.initials: H
authors.lastname: Kim
authors.forename: Sang-Sun
authors.initials: SS
authors.lastname: Han
authors.forename: Ho-Gul
authors.initials: HG
authors.lastname: Jeong
authors.forename: Hyok
authors.initials: H
authors.lastname: Park
keywords: Cephalometry; Cone-Beam Computed Tomography