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.

Key Words. Mouthrinses; preprocedural; aerosols; chlorhexidine; essential oils; cetylpyridinium chloride; microorganisms; dental office; cross-infection.