Abstract
ObjectivesThis study aimed to investigate the association between feeding practices and early childhood caries using representative Korean national survey data. MethodsData of 2772 children (aged 1-3 years) from the fourth to seventh Korean National Health and Nutrition Examination Surveys (2007-2018) were analysed. Data on decayed-filled teeth (dft) were obtained, and early childhood caries was determined as dft ≥1. Chi-squared test was performed to examine the experiencing of dental caries by participant characteristics, whilst analysis of variance was performed to compare the difference in dft values amongst the 3 groups (breast-feeding, mixed-feeding, and formula-feeding groups). Logistic regression analysis was performed to evaluate the association between feeding practice and early childhood caries. ResultsComparison of the mean dft values amongst the 3 groups showed the highest value in the breast-feeding group. Multiple logistic regression analysis results showed that the likelihood of experiencing dental caries was significantly lower in the mixed-feeding group than in the breast-feeding group, whereas no significant difference was seen between the formula-feeding and breast-feeding groups. The likelihood of early childhood caries was higher in the group that introduced weaning food at ≥6 months than that at 4- to 6-month age, whilst the introduction of cow's milk and use of nutritional supplements had no significant association with the likelihood of early childhood caries. ConclusionsBreast-feeding and delayed introduction of weaning food were associated with a higher likelihood of early childhood caries.
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