Prevalence of periodontal disease in pregnancy: A systematic review and meta-analysis

The purpose of this study was to systematically assess the epidemic trend of periodontal disease in pregnancy.Eligibility criteria comprised studies that reported periodontitis and the periodontal indicators of BOP (+) or CAL≥4 mm or PD≥4 mm among pregnant women. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were applied where applicable. Risk of bias was assessed using the Critical Appraisal Checklist for prevalence studies proposed by The Joanna Briggs Institute (JBI). Meta-analyses were conducted to estimate the pooled effect measures. Q-statistic, I2 statistic, subgroup and sensitivity analyses assessed study heterogeneity.Electronic search of articles was conducted using PubMed, Web of Science, EMBASE, Scopus, and Ovid from January 2000 to January 2022.A total of 20 studies were included in the meta-analysis. The prevalence of periodontitis among pregnancy was 40% (95% Confidence Interval (CI): [0.15, 1.00]). The prevalence rates were 67% (CI [0.56, 0.80]), 42% (CI [0.27, 0.57]) and 24% (CI [0.12, 0.37]) for BOP (+), PD≥4 mm and CAL≥4 mm respectively. Regarding subgroup meta-analyses, the prevalence rates of BOP (+) and PD≥4 mm presented a gradual increase throughout pregnancy, while the highest prevalence rate of CAL≥4 mm was in the 2nd trimester.It was observed a high prevalence of periodontal disease in pregnancy. However, heterogeneity was high among included studies. More high-quality epidemiologic investigations on periodontal disease in pregnancy are still needed.Periodontal disease in pregnancy is highly prevalent which results in a reduced quality of life, frequent systemic pathologies and adverse pregnancy outcomes. Given the unhealthy consequences, public health impact, and expansive disease burden, it is worthwhile to investigate more aspects of periodontal disease during pregnancy.