Abstract

ObjectiveTo investigate the association between single nucleotide polymorphisms (SNPs) in six candidate genes (enamelin [ENAM]; tuftelin 1 [TUFT1]; matrix metallopeptidase 13 [MMP13]; interleukin 1 beta [IL1B]; interleukin 10 [IL10]; interleukin 1 receptor antagonist [IL1RN]) and dental caries in children from northwest China.MethodsThis case–control study enrolled children (12–15 years) who underwent routine dental examinations. The children were divided into two groups based on the presence of dental caries. A saliva sample was collected and seven SNPs (rs3806804A/G in ENAM, rs3811411T/G in TUFT1, rs2252070A/G and rs597315A/T in MMP13, rs1143627C/T in IL1B, rs1800872A/C in IL10 and rs956730G/A in IL1RN) were genotyped.ResultsA total of 357 children were enrolled in the study: 161 with dental caries and 196 without dental caries. No significant difference was found in the alleles and genotypes of five genes (ENAM, TUFT1, MMP13, IL10 and IL1RN) between those with and without dental caries. A significant relationship was found between the IL1B rs1143627C/T polymorphism and dental caries susceptibility with those carrying the rs1143627CT genotype having a lower risk of dental caries compared with those carrying the CC genotype (odds ratio 0.557; 95% confidence interval 0.326, 0.952).ConclusionThe IL1B rs1143627C/T polymorphism may be associated with dental caries susceptibility in children from northwest China.

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