This scoping review mapped and critically reviewed the extant literature exploring associations between oral disease status and adverse pregnancy outcomes among women residing in sub-Saharan Africa. A literature search was conducted in July 2023 using PubMed, Cochrane Library and Google Scholar. The articles selected were those published in the English language between 1990 and 2022. After screening 833 potential studies, 15 articles met the inclusion criteria. Among these, 12 (80.0%) adopted a descriptive research design, while 3 (20.0%) used experimental methodologies. Eight (53.3%) studies were conducted in East Africa, fourteen (93.3%) studies were hospital-based, and one (6.7%) study was community-based. Periodontitis was linked with low birth weight, preterm birth, preterm birth and low birthweight, stunting, wasting, and underweight in most studies. Periodontitis was, however, not linked with adverse pregnancy outcomes in four studies. Caries was not linked with adverse pregnancy outcomes, but its sequalae was linked with low birth weight, preterm birth, neonatal stunting, and small head circumference. Two studies showed that periodontal diseases were linked with preeclampsia and chorioamnionitis. Maternal poor oral hygiene was linked with stunting. Two other studies showed no links between maternal periodontal disease and preterm premature rupture of membranes, eclampsia, spontaneous abortion, and vaginal bleeding. Furthermore, two intervention studies found that the treatment of periodontal diseases during pregnancy reduced the risk of adverse pregnancy outcomes. Further studies are needed to fully elucidate the effect size of the links observed between oral diseases and adverse pregnancy outcomes in sub-Saharan Africa.

Objective: This systematic review and meta-analysis aimed to assess the prevalence of dental caries among 6–11-year-old children in Nigeria and its distribution by sex, socioeconomic status, and geopolitical zones. Method: A systematic search was conducted in MEDLINE (PubMed), Google Scholar, and Cochrane Library (CENTRAL) to identify relevant studies published between 2012 and 2022. Cohort, cross-sectional, and observational studies reporting dental caries prevalence data among 6–11-year-olds in Nigeria were included. Using the random effects model, prevalence was analysed based on sex, socioeconomic status, and the country’s six geopolitical zones. The primary outcome was the pooled prevalence of dental caries. Meta-analysis was performed using the random effects model, and study quality was assessed using the Joanna Briggs Institute Critical Appraisal Checklist. The systematic review was registered with PROSPERO (CRD42023396948). Results: Data were pooled from 8 of 1237 screened articles. The pooled prevalence of dental caries was 1.5% (95% CI: −1.2–4.1). Prevalence was higher among males (1.5%, 95% CI: −1.4–4.3) compared to females (1.4%, 95% CI: −1.6–4.4). It was 0.1% (95% CI: −1.0–1.1) among those with high socioeconomic status, 0.2% (95% CI: −1.6 to 1.9) among those with middle socioeconomic status, and 0.6% (95% CI: −2.8 to 3.9) among those with low socioeconomic status. The prevalence also ranged from 1.1% (95% CI: −1.8 to 4.1) in southwest, 1.1% (95% CI: −5.4 to 7.6) in south-south, 2.3% (95% CI: −7.1 to 11.6) in southeast, and 2.3% (95% CI: −7.1 to 11.7) in northwest. Conclusions: Caries intervention among adolescents in Nigeria may need to be tailored to address the observed sex, socioeconomic status, and geopolitical zone disparities.