Association between vitamin D levels and risk of periodontitis in patients with metabolic syndrome

The relationship between Vitamin D (VD) and periodontitis in patients with metabolic syndrome (MetS) was unclear. This study was to investigate the relationship between VD and periodontitis in MetS patients. This cross-sectional study collected the data of 2165 MetS patients from the National Health and Nutrition Examination Survey (NHANES). The weighted univariate and multivariable Logistic regression models were applied to identify covariates and evaluate the association between 25-hydroxy vitamin D (25(OH)D) [25(OH)D]2 + 25(OH)D3 and periodontitis in patients. Odds ratio (OR) [95% confidence interval (CI)] was effect size. Subgroup analysis was performed in people with or without diabetes, dyslipidemia, hypertension, cardiovascular disease (CVD) and central obesity groups. In the unadjusted model, compared with patients with 25(OH)D2 + 25(OH)D3