title: Mixed dentition analysis - Applicability of two non-radiographic methods for Chennai school children.
abstract: OBJECTIVE
  To evaluate the applicability of the Tanaka and Johnston (1974) and Moyers (1988) methods in predicting the size of permanent canines and premolars in Chennai school children.
  
  
  METHODS
  470 sets (127 female and 343 male) of cast models were included in the sample. Mesio-distal (m-d) widths of all teeth from left to right first molars were measured and compared with the predicted values derived from Tanaka and Johnston and Moyers methods.
  
  
  RESULTS
  There was significant bilateral symmetry and sexual dimorphism in teeth sizes seen in both the sexes. Sum of the m-d diameter of permanent mandibular incisors can be used reliably to predict the sum of m-d diameters of unerupted canines and premolars.
  
  
  CONCLUSIONS
  Tanaka and Johnston's method cannot accurately predict the m-d widths. Moyers' prediction tables can be used to estimate the m-d widths of unerupted canines and premolars closer to 50% probability level.
authors.affiliation: Department of Pedodontics and Preventive Dentistry, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati, Andhra Pradesh, India.
authors.forename: Naveen Kumar
authors.initials: NK
authors.lastname: Kommineni
authors.affiliation: Department of Periodontics, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati, Andhra Pradesh, India.
authors.forename: Chowdavaram Venkat Subba
authors.initials: CV
authors.lastname: Reddy
authors.affiliation: Department of Periodontics, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati, Andhra Pradesh, India.
authors.forename: Nelapati Sarath
authors.initials: NS
authors.lastname: Chandra
authors.affiliation: Department of Conservative Dentistry and Endodontic, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati, Andhra Pradesh, India.
authors.forename: Dappili Swami Ranga
authors.initials: DS
authors.lastname: Reddy
authors.affiliation: Department of Periodontics, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati, Andhra Pradesh, India.
authors.forename: Avula Kishore
authors.initials: AK
authors.lastname: Kumar
authors.affiliation: Department of Pedodontics and Preventive Dentistry, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati, Andhra Pradesh, India.
authors.forename: Maram Vinay Chand
authors.initials: MV
authors.lastname: Reddy
keywords: Mesio-distal width; mixed dentition analysis; probability tables