title: Applicability of two methods of mixed dentition analysis in a contemporary Indian population  sample.
abstract: OBJECTIVE
  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 other than 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.
  
  
  CONCLUSIONS
  It is recommended to use these equations as a method of mixed  dentition analysis for the Indian population.
authors.affiliation: Department of Orthodontics and Dentofacial Orthopedics, Mahatma Gandhi Dental College, Jaipur, India. sonasand2000@yahoo.com
authors.forename: A
authors.initials: A
authors.lastname: Sonahita
authors.forename: R M
authors.initials: RM
authors.lastname: Dharma
authors.forename: M R
authors.initials: MR
authors.lastname: Dinesh
authors.forename: B C
authors.initials: BC
authors.lastname: Amarnath
authors.forename: C S
authors.initials: CS
authors.lastname: Prashanth
authors.forename: S
authors.initials: S
authors.lastname: Akshai
authors.forename: N A
authors.initials: NA
authors.lastname: Zuber
authors.forename: V
authors.initials: V
authors.lastname: Sathyadeep
mesh_terms: D000293:Adolescent; D000465:Algorithms; D001641:Bicuspid / Q000033:anatomy & histology*; D003430:Cross-Sectional Studies; D003481:Cuspid / Q000033:anatomy & histology*; D003818:Dentition, Mixed; D005260:Female; D005544:Forecasting; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology; D007194:India; D008297:Male; D003765:Models, Dental; D008963:Molar / Q000033:anatomy & histology; D009811:Odontometry / Q000295:instrumentation / Q000706:statistics & numerical data*; D012737:Sex Factors; D014097:Tooth, Unerupted / Q000033:anatomy & histology*; D055815:Young Adult