Abstract
ObjectiveNon-syndromic supernumerary teeth (NSST) are a common type of dental anomaly. microRNAs (miRNAs) play an important role in craniofacial and tooth development. Therefore, we hypothesized that single nucleotide polymorphisms (SNPs) of miRNAs may be associated with the susceptibility of NSST. Materials and methodsFour miRNA SNPs (rs2910164, rs11614913, rs2043556, and rs2682818) were selected, and their associations with NSST susceptibility were evaluated in a case-control study (163 NSST patients and 326 healthy controls). Resultsrs2910164 was significantly associated with a risk of lower NSST (additive model: OR = 4.00, 95 % CI = 1.76–9.09, P = 0.001), and rs2682818 showed nominal association with a risk of upper NSST (additive model: OR = 1.40, 95 % CI = 1.02–1.91, P = 0.037) and NSST among male patients (additive model: OR = 1.62, 95 % CI = 1.08–2.43, P = 0.020). ConclusionGenetic variants of miR-146a/rs2910164 and miR-618/rs2682818 were likely associated with the risk of NSST in the Chinese population.
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