Comparative Evaluation of the Relationship between Different Anthropometric Measurements on the Face with the Mesiodistal Width of the Maxillary Central Incisor in Males and Females in Local Population in Pune, India

Aims: To compare the width of the central incisor obtained by the given formulae with the actual width of the central incisor in males and females and assess whether the interpupillary , interalar ,intercommisural and interlateral canthus widths are reliable anthropometric measurements to give an accurate value of the width of the central incisor in local population. Study Design: Original Research. Place and Duration of Study: Department Of Prosthodontics and Crown and Bridge, Dr. D. Y. Patil Dental College and Hospital, Pimpri, Pune. Dr. D. Y. Patil Vidyapeeth, Pune – 411018, between June 2009 and July 2010. Methodology: A total of 160 participants [Males=80; Females=80] were selected in the age group of 18-25 yrs which fulfilled the selection criteria. Informed consent was obtained from each student before participation. The following anthropometric measurements were performed: CW which is the mesiodistal width of the maxillary central incisor, interpupillary width (IPW) and the interalar width (IAW), intercommisural width (ICW) and interlateral canthus width (LCW) which were calculated using a digital vernier calliper. The differences and variables were studied by sex and the differences in the expected mesiodistal width of the central incisor by IPW/CW=6.6 and CW=IAW/4 with the real value was evaluated. The values were evaluated and the differences helped in determining whether these anthropometric measurements can be used as a guide for selection of artificial teeth in males and females in local population. Results: As per this study conducted, in males & females there was statistically significant correlation between the width of the central incisors (CI) and the interalar width IAW (P value =0.043) and the interpupillary width IPW (P value =0.003) when calculated by formula CI=IAW/4 and CI=IPW/6.6. There was no statistically significant correlation between the width of the central incisor and the interlateral canthus width (LCW) and the intercommisural width (ICW). Conclusion: There was significant correlation between the interalar width and interpupillary width and the width of the central incisor. Thus, interalar width, when divided by 4, and the interpupillary width when divided by 6.6 was a reliable predictor of the selection of the maxillary central incisor width in females and males in local population.