| Summary: | Background: The development and integrity of the oral cavity and the progression of oral diseases may be affected by the nutritional status and diet of the person. The most ubiquitous oral diseases are found to be dental caries and periodontal diseases in the world. Therefore, the aim of the present study was to assess the correlation between food frequency with nutrient adequacy ratio (NAR), NAR with dental caries, and dental erosion. Materials and Methods: This study was conducted among dental postgraduate (PG) students. A self-administered questionnaire was developed with consisted food frequency, acquired dietary allowance, Decayed, Missing Filled teeth (DMFT) index, and tooth wear index. Correlation was assessed between food frequency and NAR, NAR with dental caries and dental erosion. Results: Out of 123 PGs 100 PGs participated in the study making response rate 81%. Consumption of chapatti, pulses vegetables white rice, sugar, milk and milk products, and acidic food is on the daily basis mostly and it was statistically significant (P < 0.05). A statistically significant difference (P < 0.05) was also seen between frequency of consuming food items in decreasing order is fats, legumes, roots and tubers, fruits, meat and meat products, fried foods, vitamin and mineral supplements those who eat daily and never. Conclusion: The significant association between food frequency and nutrient adequacy ratio might be helpful assessing nutritional values. The high use of acidic beverages is a serious threat to the health of the oral cavity.
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