The demographic and environmental risk factors identified above (sex, ethnicity and frequency of sugary food intake) were included as covariates in the binary logistic regression analyses (Enter method) to identify the association between genotypes and alleles of PART1 rs27565 and DEFB1 rs11362 with dental caries (dependent variable: DMFT score = 0 and DMFT score ≥ 1). Here, PART1 is linked to dental caries.