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Breastfeeding and Early Childhood Caries: Findings from the National Health and Nutrition Examination Survey, 2011 to 2018.

Purpose: Childhood caries is a highly prevalent disease that is intricately connected to diet and other social and behavioral factors. While it has been established that breastfeeding confers many health benefits for children, previous research found no consensus on the relationship between breastfeeding and caries. The purpose of this study was to examine the relationship between early childhood caries (ECC) and the length of time breastfeeding using the National Health and Nutrition Examination Survey (NHANES). Methods: Four cycles of NHANES (2011 to 2018) were analyzed, including 3,234 children ages two to five years. The association between breastfeeding duration and incidence of ECC and severe earlychildhood caries (S-ECC) was evaluated using logistic regression, adjusting for age, ethnicity, education, income, last dental visit, and sugar-sweetened beverages. Results: In the study population, 16.9 percent had ECC and 12.2 percent had S-ECC. Breastfeeding six months to one year, one to two years, or over two years was not associated with higher odds of ECC or S-ECC than breastfeeding for zero to six months after adjusting for covariates. Conclusions: There was no statistically significant relationship between breastfeeding and early childhood caries, and breastfeeding duration was not associated with increased caries risk. More research from well-controlled analytical studies is needed to establish or refute a relationship between breastfeeding and ECC.