title: Tooth size ratios of Nigerian and the applicability of Bolton's analysis.
abstract: OBJECTIVE
  To establish tooth size ratio of Nigerian, to compare with size ratio among gender and to compare tooth size ratios of Nigerian with that of Caucasians as determined by Bolton's.
  
  
  METHODS
  Dental casts of 250 subjects (125 males and 125 females) were used for the study. The age range was 12-15 years. All subjects had normal class I occlusion with no history of orthodontic treatment.
  
  
  RESULTS
  A mean overall ratio of 92.5 +/- 0.5% and anterior ratio of 79.0 +/- 0.5 were reported for Nigerian teeth. Tooth size ratios among gender was compared using the Student's t-test, there was no significant difference (P > 0.05). Nigerian tooth size ratio was compared with those of Caucasians as determined by Bolton, no statistically significant differences were found (P > 0.05).
  
  
  CONCLUSIONS
  Tooth size ratios among Nigerians have been established. Bolton's formula for tooth size analysis also applies to Nigerian teeth. The tooth size ratios of Nigerian females are higher than those of males.
authors.affiliation: Dpt of Child Oral Health, College of Medicine, University College Hospital, Ibadan, Nigeria.
authors.forename: A T
authors.initials: AT
authors.lastname: Adeyemi
authors.forename: O O
authors.initials: OO
authors.lastname: Bankole
authors.forename: O O
authors.initials: OO
authors.lastname: Denloye
mesh_terms: D000293:Adolescent; D044383:Black People; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009549:Nigeria; D009811:Odontometry / Q000706:statistics & numerical data; D009929:Organ Size; D012015:Reference Standards; D012737:Sex Factors; D014070:Tooth / Q000033:anatomy & histology*; D044465:White People