title: Evaluation of the Bolton ratios on 3D dental casts of Brazilians with natural, normal occlusions.
abstract: OBJECTIVE
  To evaluate the Bolton ratios in Brazilians with natural, normal occlusions.
  
  
  METHODS
  Thirty-five dental casts of Brazilian Caucasians with a natural, normal occlusion from the files of the Postgraduate Program in Orthodontics of the Methodist University of São Paulo were scanned in three dimensions. On the scanned images, the greatest mesiodistal distance of each tooth from right first molar to left first molar was measured with Geomagic Studio 5 software. The Bolton ratios were then calculated.
  
  
  RESULTS
  The anterior ratio amounted to 78.66% (SD ± 2.72) and the total ratio to 91.58% (SD ± 2.20).
  
  
  CONCLUSIONS
  The anterior, but not the overall, ratio was significantly different from the ratio suggested by Bolton.
authors.affiliation: Department of Orthodontics, Methodist University of São Paulo, São Paulo, Brazil.
authors.forename: Renata Pilli
authors.initials: RP
authors.lastname: Jóias
authors.forename: Leandro Gonçalves
authors.initials: LG
authors.lastname: Velasco
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Scanavini
authors.forename: André Luis Ribeiro
authors.initials: AL
authors.lastname: de Miranda
authors.forename: Danilo Furquim
authors.initials: DF
authors.lastname: Siqueira
mesh_terms: D000293:Adolescent; D001641:Bicuspid / Q000033:anatomy & histology; D001938:Brazil; D002648:Child; D003481:Cuspid / Q000033:anatomy & histology; D003766:Dental Occlusion; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007180:Incisor / Q000033:anatomy & histology; D008297:Male; D003765:Models, Dental; D008963:Molar / Q000033:anatomy & histology; D009811:Odontometry / Q000379:methods*; D012984:Software; D044465:White People; D055815:Young Adult