title: Comparison between full face and hemifacial CBCT cephalograms in clinically symmetrical patients: a pilot study.
abstract: BACKGROUND
  One of the advantages of cone-beam computed tomography (CBCT) is the possibility of obtaining images of conventional lateral cephalograms derived from partial or complete reconstruction of facial images.
  
  
  OBJECTIVE
  This study aimed at comparing full face, right and left hemifacial CBCT cephalograms of orthodontic patients without clinical facial asymmetry.
  
  
  METHODS
  The sample comprised nine clinically symmetrical patients who had pretreatment full face CBCT. The CBCTs were reconstructed so as to obtain full face, right and left hemifacial cephalograms. Two observers, at two different times, obtained linear and angular measurements for the images using Dolphin 3D software. Dependent and independent t-tests were used to assess the reproducibility of measurements. Analysis of Variance and Kruskal-Wallis tests were used to compare the variables obtained in the CBCT derived cephalometric views.
  
  
  RESULTS
  There was good reproducibility for CBCT scans and no statistically significant differences between measurements of full face, right and left hemifacial CBCT scans.
  
  
  CONCLUSIONS
  Cephalometric measurements in full face, right and left hemifacial CBCT scans in clinically symmetrical patients are similar.
authors.affiliation: Centro de Estudos e Pesquisas, Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Cintia Helena Zingaretti
authors.initials: CH
authors.lastname: Junqueira
authors.affiliation: Department of Orthodontics, College of Dentistry, Universidade de São Paulo, Bauru, São Paulo, Brazil.
authors.forename: Guilherme
authors.initials: G
authors.lastname: Janson
authors.affiliation: Centro de Estudos e Pesquisas, Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Marisa Helena Zingaretti
authors.initials: MH
authors.lastname: Junqueira
authors.affiliation: Faculdade do Centro Oeste Pinelli Henriques, Curitiba, Paraná, Brazil.
authors.forename: Lucas Marzullo
authors.initials: LM
authors.lastname: Mendes
authors.affiliation: Faculdade de Medicina de Petrópolis, Petrópolis, Rio de Janeiro, Brazil.
authors.forename: Eduardo Esberard
authors.initials: EE
authors.lastname: Favilla
authors.affiliation: Department of Orthodontics, College of Dentistry, Universidade de São Paulo, Bauru, São Paulo, Brazil.
authors.forename: Daniela Gamba
authors.initials: DG
authors.lastname: Garib
mesh_terms: D000328:Adult; D002508:Cephalometry / Q000706:statistics & numerical data*; D054893:Cone-Beam Computed Tomography / Q000706:statistics & numerical data*; D005145:Face / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000706:statistics & numerical data; D021621:Imaging, Three-Dimensional / Q000706:statistics & numerical data; D007180:Incisor / Q000000981:diagnostic imaging; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging; D008437:Maxilla / Q000000981:diagnostic imaging; D009295:Nasal Bone / Q000000981:diagnostic imaging; D015588:Observer Variation; D010159:Palate / Q000000981:diagnostic imaging; D010865:Pilot Projects; D015203:Reproducibility of Results; D012658:Sella Turcica / Q000000981:diagnostic imaging; D019291:Skull Base / Q000000981:diagnostic imaging; D014716:Vertical Dimension