A cross-sectional study was performed to evaluate whether dietary intake and nutrition contribute to the aetiology of common dental diseases in rural Bangladesh. Study subjects were selected following multi-staged stratified random sampling procedure. A total of 300 people of both sexes were included in the study with age ranging from 12-40 years. Data were collected for demographic and socio-economic condition, oral hygiene and related knowledge, dietaryconsumption, history and clinical findings. The study subjects were categorized as adequate nutrient and undernutrient by dichotomy based on their needed intake and the quality of diet consumed.