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AIM: A meta-analysis was conducted to quantitatively summarize the evidence from observational studies on alcohol consumption and risk of periodontitis. MATERIAL AND METHODS: A comprehensive literature search was performed in PubMed, Web of Science and Embase databases to identify eligible studies published in English. Pooled relative risks (RRs) with 95% confidence intervals (CIs) were calculated by random-effects models. Restricted cubic splines were used to assess the dose-response relationship. RESULTS: Eighteen studies were included in our meta-analysis. The pooled RR of periodontitis for the highest with the lowest alcohol consumption was 1.59 (95% CI: 1.37-1.85). Significant associations were also found in stratified analysis by gender males: (1.25, 95% CI: 1.11-1.41), females (2.15, 95% CI: 1.36-3.41) and study design cohort studies: 1.28 (1.04-1.57) and cross-sectional studies: 1.66 (1.39-1.99). A linear dose-response relationship was found between alcohol consumption and periodontitis risk, and the risk of periodontitis increased by 0.4% 95% CI (1.002-1.007) (p = 0.002) for each 1 g/day increment in alcohol consumption. CONCLUSION: This meta-analysis suggested that alcohol consumption was associated with an increased risk of periodontitis.
Wang et al. (Thu,) studied this question.