title: Comparison of transverse analysis between posteroanterior cephalogram and cone-beam computed tomography.
abstract: OBJECTIVE
  To evaluate maxillary and mandibular alveolar and basal bone widths using cone-beam computed tomography (CBCT) and to verify the correlation between CBCT images and posteroanterior (PA) cephalograms.
  
  
  METHODS
  The CBCT scans and PA cephalograms were obtained from 20 men (age range  =  24.0-29.1 years; mean age  =  27.2 years; SD  =  2.8 years) and 20 women (age range  =  20.3-28.1 years; mean age  =  26.4 years; SD  =  3.2 years) with normal occlusion. On CBCT images, maxillary and mandibular bone widths were measured at three posterior sites and five bone levels. The differences between maxillary and mandibular bone widths were calculated and compared with conventional transverse width of PA cephalograms.
  
  
  RESULTS
  Statistically significant differences in maxillary and mandibular bone widths were detected at different levels and sites. Bone widths were significantly increased from the alveolar crest toward the basal bone in the maxillary molar and mandibular second premolar and molar areas. A statistically significant correlation was only found between CBCT images and PA cephalograms for maxillomandibular width at the first molar area.
  
  
  CONCLUSIONS
  The results of this study suggested that three-dimensional assessment of maxillomandibular width is mandatory for the transverse analysis.
authors: a  Assistant Professor, Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Chonnam National University, Gwangju, Korea.
authors: Kyung-Min
authors: KM
authors: Lee
authors: Hyeon-Shik
authors: HS
authors: Hwang
authors: Jin-Hyoung
authors: JH
authors: Cho
mesh_terms: D000328:Adult; D000539:Alveolar Process / Q000000981:diagnostic imaging; D001641:Bicuspid / Q000000981:diagnostic imaging; D002508:Cephalometry / Q000706:statistics & numerical data*; D054893:Cone-Beam Computed Tomography / Q000706:statistics & numerical data*; D003724:Dental Arch / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000706:statistics & numerical data; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging; D008437:Maxilla / Q000000981:diagnostic imaging; D008963:Molar / Q000000981:diagnostic imaging; D019227:Tooth Apex / Q000000981:diagnostic imaging; D014092:Tooth Root / Q000000981:diagnostic imaging; D055815:Young Adult
keywords: CBCT, Transverse analysis; Maxillomandibular width