title: Inner canthal distance and golden proportion as predictors of maxillary central incisor width in south Indian population.
abstract: OBJECTIVE
  Even though the constant relation of golden proportion and inner canthal distance (ICD) with the width of the maxillary central incisor (CIW) has been found in European population, it may not be applied to Indian population as we differ from Europeans racially and genetically. Hence, this study was carried out with the objectives of determining if these parameters are applicable to our population also.
  
  
  METHODS
  Three hundred south Indian subjects between 18 and 26 years of age, free from facial and dental deformities were examined. Inner canthus of each eye was used as soft tissue landmark. The maxillary central incisors were measured at the contact point area with the help of digital vernier caliper. The CIW was also calculated using golden proportion ratio to obtain the calculated central incisor width. A comparison was made with measured width. Statistical analyses were done to identify any significant difference using "Z" tests. Pearson's Correlation Coefficient test was used to evaluate the measured and the calculated width of the central incisor.
  
  
  RESULTS
  ICD and the width of two maxillary incisors were in golden proportion in south Indian population. Also, ICD when multiplied by a decreasing function value of the golden proportion and divided by 2 is a reliable predictor of determining CIW.
  
  
  CONCLUSIONS
  As in the European population, the ICD and the golden proportion are reliable predictors for determining the width of the maxillary central incisors in the south Indian population also.
authors.affiliation: Department of Prosthodontics & Implantology, Nitte University, Mangalore, Karnataka, India.
authors.forename: Shibu
authors.initials: S
authors.lastname: George
authors.forename: Vinaya
authors.initials: V
authors.lastname: Bhat
mesh_terms: D000293:Adolescent; D000328:Adult; D002508:Cephalometry / Q000706:statistics & numerical data*; D004954:Esthetics; D004955:Esthetics, Dental; D005143:Eyelids / Q000033:anatomy & histology*; D005260:Female; D005544:Forecasting; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology*; D007194:India; D008297:Male; D008437:Maxilla / Q000033:anatomy & histology*; D009811:Odontometry / Q000706:statistics & numerical data*; D012529:Saudi Arabia; D012737:Sex Factors; D055815:Young Adult