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ORIGINAL ARTICLE
Year : 2014  |  Volume : 4  |  Issue : 2  |  Page : 133-138

Mixed dentition analysis - Applicability of two non-radiographic methods for Chennai school children


1 Department of Pedodontics and Preventive Dentistry, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati, Andhra Pradesh, India
2 Department of Periodontics, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati, Andhra Pradesh, India
3 Department of Conservative Dentistry and Endodontic, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati, Andhra Pradesh, India

Correspondence Address:
Naveen Kumar Kommineni
Department of Pedodontics and Preventive Dentistry, Chadalawada Krishna Srinivasa Teja Institute of Dental Sciences, Tirupati - 517 507, Andhra Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2231-0762.139847

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Aim: 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. Materials and 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.


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