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  • Title: Efficacy of preprocedural mouthrinses in the reduction of microorganisms in aerosol: A systematic review.
    Author: Marui VC, Souto MLS, Rovai ES, Romito GA, Chambrone L, Pannuti CM.
    Journal: J Am Dent Assoc; 2019 Dec; 150(12):1015-1026.e1. PubMed ID: 31761015.
    Abstract:
    BACKGROUND: The authors of this systematic review aimed to evaluate the efficacy of preprocedural mouthrinses in reducing the number of microorganisms disseminated by means of the aerosol generated via dental procedures when compared with a placebo, water, or no mouthrinse. TYPES OF STUDIES REVIEWED: The authors included only randomized clinical trials. They searched MEDLINE (PubMed), Embase, Google Scholar, and Latin American and Caribbean Health Sciences Literature databases through May 31, 2019. They performed random-effects meta-analysis for reduction of the number of colony-forming units (CFU) in the dental aerosol. RESULTS: Of 770 potentially relevant articles, the authors included 13 randomized clinical trials in which researchers studied the efficacy of chlorhexidine, essential oils, cetylpyridinium chloride, and herbal products. Meta-analysis of 12 studies showed that mouthrinses with chlorhexidine, essential oils, and cetylpyridinium chloride significantly reduced the number of CFU. Overall, the use of a preprocedural mouthrinse resulted in a mean reduction in the number of CFUs of 64.8% (95% confidence interval, 50.4% to 79.3%; I2 = 37%) compared with control. None of the included studies presented a low risk of bias. PRACTICAL IMPLICATIONS: Some dental procedures result in dissemination of microorganisms in the aerosol in the dental office. There is moderate evidence that preprocedural mouthrinses significantly reduce the number of microorganisms in the dental aerosol.
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