title: Relationship between dental size and normal occlusion in Brazilian patients.
abstract: The present study was performed on dental casts and lateral cephalometric films of 30 Caucasian Brazilian individuals (15 males and 15 females) aged 18 to 27 years and 4 months, all presenting normal occlusion and satisfactory facial profile. The aims were to investigate the existence of dental discrepancies according to Bolton's criteria, to obtain mean values for overbite, overjet, curve of Spee and interincisal angle, and to demonstrate any correlation among these parameters. A single calibrated operator measured each variable characteristics and the process was recorded twice with an accurate modified digital caliper. It was observed that the sample of normal occlusion did not present any dental discrepancy among the 12 teeth of opposite arches. The overall ratio (91.46) and anterior ratio (77.83) were in accordance with those proposed by Bolton. The mean values for normal occlusion in this Brazilian sample were defined as: 2.45 mm for overbite; 1.92 mm for overjet; 1.01 mm for curve of Spee and 129.57 degrees for interincisal angle. A statistically significant correlation was found between overjet and overbite.
authors.affiliation: Department of Orthodontics, Rio de Janeiro State University, Rio de Janeiro, Brazil.
authors.forename: Sheila Medina
authors.initials: SM
authors.lastname: Freire
authors.forename: Clarice
authors.initials: C
authors.lastname: Nishio
authors.forename: Alvaro de Moraes
authors.initials: Ade M
authors.lastname: Mendes
authors.forename: Cátia Cardoso Abdo
authors.initials: CC
authors.lastname: Quintão
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Almeida
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil; D002508:Cephalometry / Q000592:standards*; D003766:Dental Occlusion; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000175:diagnosis*; D008334:Mandible; D008437:Maxilla; D009811:Odontometry / Q000592:standards*; D012016:Reference Values; D014070:Tooth / Q000033:anatomy & histology*; D055815:Young Adult