Evaluation of the Bolton ratios on 3D dental casts of Brazilians with natural, normal occlusions.
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.
Jóias
Renata Pilli
RP
Department of Orthodontics, Methodist University of São Paulo, São Paulo, Brazil.
Velasco
Leandro Gonçalves
LG
Scanavini
Marco Antonio
MA
de Miranda
André Luis Ribeiro
AL
Siqueira
Danilo Furquim
DF
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