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International Journal of Dentistry
Volume 2015, Article ID 126530, 5 pages
Research Article

Relationship between Body Mass Index and Tooth Decay in a Population of 3–6-Year-Old Children in Iran

1Department of Pediatric Dentistry and Kerman Oral and Dental Disease Research Center, Kerman Dental School, Kerman 7618759689, Iran
2Kerman Oral and Dental Disease Research Center, Kerman Dental School, Kerman 7618759689, Iran
3Department of Pediatric Dentistry, Bandar Abbas Dental School, Bandar Abbas, Iran

Received 24 June 2014; Revised 23 December 2014; Accepted 15 January 2015

Academic Editor: Carlos A. Munoz-Viveros

Copyright © 2015 Leila Shafie Bafti et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The aim of the present study was to evaluate the relationship between BMI and tooth decay in a population of Iranian children. In this cross-sectional descriptive/analytical study, 1482 children were selected from kindergartens and preschool centers in Kerman, Iran. The children underwent examination of deciduous teeth (using the dmft index) after determination of height and weight for calculation of BMI. The relationship between BMI (after adjustment for age) and dmft was determined using Poisson’s regression model. The mean of dmft in children with normal BMI was 1.5-fold that in subjects with extra body weight. Age had a significant effect on dmft. In addition, dmft was higher in boys compared to girls. The results of the present study showed that caries rate in the deciduous teeth of 3–6-year-old children decreases with an increase in body weight.