The Vitamin D Receptor Bsm1 Variant is not Associated With Temporomandibular Disorder With or Without Bruxism

Abstract

Background: Temporomandibular joint disorder (TMD), a set of conditions that affect the temporomandibular joint and related structures, is frequently linked to bruxism. The vitamin D receptor (VDR) affects calcium absorption, bone remodeling, and mineralization rate. The goal of this study was to evaluate the role of the VDR Bsm1 (rs1544410) variant in the susceptibility to bruxism in TMD. Method: A total of 321 people [221 TMD patients (135 with bruxism and 86 without bruxism) and 100 healthy controls] were included in the study. The VDR Bsm variant was genotyped using the PCR-RFLP method. Results: We found no significant difference between the all-TMD patient group and the control group regarding the VDR Bsm1 genotype and allele distribution (p>0.05). There was no deviation from HWE for the VDR variant in groups. There was no relationship between pain characteristics and VDR Bsml genotype distribution in patients with bruxism. Conclusions: Our results support the conclusion that the VDR Bsm1 variant is not a risk factor for the development of bruxism in TMD. The effect of the VDR Bsml variant on the risk of bruxism in TMD should be investigated in studies involving larger populations and other ethnicities.