title: A comparative study to find out the relationship between the inner inter-canthal distance, interpupillary distance, inter-commissural width, inter-alar width, and the width of maxillary anterior teeth in Aryans and Mongoloids.
abstract: BACKGROUND
  One of the most confusing and difficult aspects of complete denture prosthodontics is the selection of appropriately sized maxillary anterior denture teeth. Various guidelines have been suggested for determining the size of anterior teeth, but different opinions have been reported regarding their significance. In the study reported here, the relationships between facial measurements and the width of maxillary anterior teeth in two ethnic groups, namely Aryans and Mongoloids, were determined.
  
  
  OBJECTIVE
  The aims of the study were to determine the inner inter-canthal distance (ICAD), inter-pupillary distance (IPD), inter-commissural width (ICOW), inter-alar width (IAW), and the combined width of maxillary anterior teeth (CW) in Aryans and Mongoloids and to determine the relationships between these measurements.
  
  
  METHODS
  Impressions of the teeth of 170 dentulous subjects (85 males and 85 females) were made with alginate then Type IV gypsum product was poured in. Measurements of the cast maxillary anterior teeth at their widest dimension (contact areas) were made with the Boley gauge. ICAD, IPD, ICOW, and IAW distances were also measured with a Boley gauge.
  
  
  RESULTS
  For all 170 subjects, 85 Aryans and 85 Mongoloids, Pearson's correlation coefficient (r) for IAW, IPD, ICOW, ICAD, and CW was calculated. In Aryans, highly significant (P<0.001) but weak correlations were found between CW and IAW, IPD, and ICOW. In Mongoloids, a highly significant (P<0.001) and weak correlation was found only between CW and IPD.
  
  
  CONCLUSIONS
  Within the limitations of this study, the results suggest that the IAW, IPD, and ICOW for Aryans and IPD for Mongoloids can be used as a preliminary method for determining the width of the maxillary anterior teeth in edentulous patients.
authors.affiliation: Department of Prosthodontics, BP Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Meena Kumari
authors.initials: MK
authors.lastname: Mishra
authors.affiliation: Department of Prosthodontics, BP Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Raj Kumar
authors.initials: RK
authors.lastname: Singh
authors.affiliation: Department of Prosthodontics, BP Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Pramita
authors.initials: P
authors.lastname: Suwal
authors.affiliation: Department of Prosthodontics, BP Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Prakash Kumar
authors.initials: PK
authors.lastname: Parajuli
authors.affiliation: Department of Prosthodontics, BP Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Pragya
authors.initials: P
authors.lastname: Shrestha
authors.affiliation: Department of Prosthodontics, BP Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Dharanidhar
authors.initials: D
authors.lastname: Baral
keywords: Nepal; facial measurements; maxillary anterior denture teeth; maxillary anterior teeth width