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. 2017 Feb;18(1):31-37.
doi: 10.1007/s40368-016-0263-7. Epub 2017 Jan 21.

Accuracy and evaluation of a new regression equation in predicting the width of unerupted permanent canines and premolar teeth

A Bhatnagar  1 , A A Sinha  2 , S Chaudhary  2 , N Manuja  2 , H Kaur  2 , T R Chaitra  2
Affiliations

Accuracy and evaluation of a new regression equation in predicting the width of unerupted permanent canines and premolar teeth

A Bhatnagar et al. Eur Arch Paediatr Dent. 2017 Feb.

Abstract

Aim: To assess the applicability of two regression equations based on mixed dentition analysis and to propose and evaluate a new regression equation using the mandibular incisors and first permanent molars as predictors in calculating the size of unerupted permanent canines and premolar teeth in school children.

Methods: Dental study casts of 100 children (50 males and 50 females) aged 11-14 years from schools situated in Moradabad, Uttar Pradesh, India were used. The analysis of Tanaka Johnston, Bernabe Flores-Mir and the proposed equation were tested on the casts.

Results: The analysis of Tanaka Johnston and Bernabe Flores-Mir tended to overestimate the mesio-distal width of the canines and premolars. The proposed equation also overestimated but the mean difference showed a closer approximation with the actual measured values compared to the other two equations.

Conclusion: Validating studies with a similar population must be conducted to confirm the applicability and precision of the proposed equation.

Keywords: Children; Dental study cast; Mesio-distal width; Mixed dentition analysis; New regression equation.

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