Aim – The purpose of this study is to find whether any correlation exists between dental caries and body mass index.

Materials and Method – 80 Patients were divided into two groups. Group A with no caries or mild caries and Group B with moderate or severe caries after oral examination. Height and weight of the patients were taken and body mass index was calculated.

Results– The results show that patients in group B were slightly underweight than patients in group A. Statistically no significant values were obtained for BMI and dental caries.

Conclusion – More factors are involved in prevalence of caries and malnutrition in children.BMI cannot be used as a sole tool to correlate dental caries and nutritional status of the child as the degree of significance is very less.