Association of Chlorhexidine Use and Scaling and Root Planing With Birth Outcomes in Pregnant Individuals With Periodontitis

Author:

Merchant Anwar T.1,Gupta Rajat Das1,Akonde Maxwell1,Reynolds Mark2,Smith-Warner Stephanie3,Liu Jihong1,Tarannum Fouzia4,Beck James5,Mattison Donald1

Affiliation:

1. Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia

2. School of Dentistry, University of Maryland Baltimore, Baltimore

3. Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts

4. M. R. Ambedkar Dental College and Hospital, Bangalore, India

5. Division of Comprehensive Oral Health and Periodontology, University of North Carolina, Chapel Hill

Abstract

ImportanceChlorhexidine mouthwash enhances treatment effects of conventional periodontal treatment, but data on chlorhexidine as a source of heterogeneity in meta-analyses assessing the treatment of maternal periodontitis in association with birth outcomes are lacking.ObjectiveTo assess possible heterogeneity by chlorhexidine use in randomized clinical trials (RCTs) evaluating the effect of periodontal treatment (ie, scaling and root planing [SRP]) vs no treatment on birth outcomes.Data SourcesCochrane Oral Health’s Trials Register, Cochrane Pregnancy and Childbirth’s Trials Register, Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE Ovid, Embase Ovid, LILACS BIREME Virtual Health Library (Latin American and Caribbean Health Science Information database), US National Institutes of Health Ongoing Trials Register (ClinicalTrials.gov), and the WHO International Clinical Trials Registry Platform were searched through March 2022.Study SelectionRCTs were included if they were conducted among pregnant individuals with periodontitis, used interventions consisting of SRP vs no periodontal treatment, and assessed birth outcomes.Data Extraction and SynthesisData were abstracted with consensus of 2 reviewers using Rayyan and assessed for bias with the Cochrane Risk of Bias 2 tool before random effects subgroup meta-analyses. Analyses were conducted following the Preferred Reporting Items for Systematic Reviews and Meta-analyses reporting guideline.Main Outcomes and MeasuresOutcomes of interest were preterm birth (ie, <37 weeks’ gestation) and low birth weight (ie, <2500 g).ResultsThere were 12 studies with a total of 5735 participants evaluating preterm birth. Control group participants did not receive any treatment or use chlorhexidine during pregnancy. All intervention group participants received SRP; in 5 of these studies (with 2570 participants), pregnant participants in the treatment group either received chlorhexidine mouthwash or advice to use it, but participants in the remaining 7 studies (with 3183 participants) did not. There were 8 studies with a total of 3510 participants evaluating low birth weight, including 3 studies with SRP plus chlorhexidine (with 594 participants) and 6 studies with SRP only (with 2916 participants). The SRP plus chlorhexidine groups had lower risk of preterm birth (relative risk [RR], 0.56; 95% CI, 0.34-0.93) and low birth weight (RR, 0.47; 95% CI, 0.32-0.68) but not the SRP-only groups (preterm birth: RR, 1.03; 95% CI, 0.82-1.29; low birth weight: RR, 0.82; 95% CI, 0.62-1.08).Conclusions and RelevanceThese findings suggest that treating maternal periodontitis with chlorhexidine mouthwash plus SRP was associated with reduced risk of preterm and low birth weight. Well-conducted RCTs are needed to test this hypothesis.

Publisher

American Medical Association (AMA)

Subject

General Medicine

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