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Applicability of two methods of mixed dentition analysis in a contemporary Indian population sample
 

Type:  Articles

Pubblication date:  03/2012

Authors:  A. Sonahita, R.M. Dharma*, M.R. Dinesh*, B.C. Amarnath*, C.S. Prashanth*, S. Akshai, N.A. Zuber, V. Sathyadeep**

Language:  English

Institution:  Department of Orthodontics and Dentofacial Orthopedics, Mahatma Gandhi Dental College, Jaipur, India *Department of Orthodontics and Dentofacial Orthopedics, DAPM RV Dental College, Bangalore, India **Department of Orthodontics and Dentofacial Orthopedics, Dayananda Sagar College of Dental Sciences, Bangalore, India

Publication:  European Journal of Paediatic Dentistry

Publisher:  Ariesdue Srl

Keywords:  Mixed dentition analysis; Moyer’s mixed dentition analysis; Prediction Methods; Regression equations; Space analysis; Tanaka Johnston's method of analysis.

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Title:  Applicability of two methods of mixed dentition analysis in a contemporary Indian population sample

Abstract:  Aim More than 10 years experience in implementing the Tanaka Johnston and Moyers methods has shown that they overestimate the sizes of unerupted canines and premolars when used in populations otherthan the Caucasian. This study was designed to assess the applicability of the two most commonly used methods of mixed dentition analysis and to attempt to derive a more accurate and precise formula to predict the sizes of the unerupted premolars and canines in a sample of Indian population. Methods The sample included 200 study models (100 male, 100 female). Tanaka Johnston’s and Moyer’s equations were applied to this sample and the mean differences between the actual and estimated tooth widths were determined. New regression equations were derived using lower first molars and incisors as the predictors. Results The mean difference between the actual and estimated values of canines and premolars using Tanaka Johnston’s and Moyers methods were clinically and statistically significant. Therefore new regression equations were derived taking lower first molars and incisors as the predictors for both sexes. On validation, these equations were found to be accurate and precise for this population. Conclusion It is recommended to use these equations as a method of mixed dentition analysis for the Indian population.

 
 
 
 
 
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