To Evaluate the Accuracy of Tanaka Johnston Mixed Dentition Analysis in Gulbarga Population: An In Vitro Study

Abstract

Background:This study was undertaken to evaluate the applicability of Tanaka and Johnston mixed dentition prediction methods on Gulbarga population. Mesiodistal tooth dimensions of four mandibular incisors, maxillary and mandibular canines and premolar teeth were measured using a digital VernierCalipers calibrated to the nearest of 0.01mm from study models representing 50 male and 50 female of Gulbarga subjects. The actual measurements were then compared with the predicted values derived from Tanaka Johnston equation. Correlation and regression analysis were performed between the predicted and actual tooth size for Gulbarga subjects and standard regression equations were developed. Objectives:To test the reliability of Tanaka Johnston mixed dentition space analysis in Gulbarga population. To determine, if any, sexual dimorphism with respect to Tanaka Johnston mixed dentition analysis. Materials and Methods: The mesiodistal dimensions of teeth on study casts of 13-16 years (50 males and 50 females were selected) from Gulbarga population were measured. The actual tooth measurements were then compared with predicted values using the Tanaka Johnston equations.