Background and Objectives : Obesity is a leading preventable cause of death worldwide, with increasing prevalence in adults and children, and authorities view it as one of the most serious public health problems of the 21st century. There is a high level of evidence which shows direct association between obesity and dental caries. Various surveys have being conducted world wide in different ethnic populations to see the association between the caries development and BMI of children. Currently there is no data available in relation between BMI and prevalence of dental caries in Indian school children indicating the need for further well-designed studies to demonstrate the relationship between the two. Methodology: Data collection was part of the Oral Health Survey and free dental check up camp in various schools in Noida. A total of 250, 9 -11 year-old school children constituted the study group. Results: The Pearson correlation was used to find the relationship between the prevalence of dental caries and BMI of the school children included. A significant correlation existed between the two. Conclusion: Together with obesity as a matter of concern in school children worldwide the maintenance of dental health also need to be emphasized for this at risk group.

Keywords: Obesity; Dental caries; Body mass index