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  • Title: Reduction of viable bacteria in dental aerosols by preprocedural rinsing with an antiseptic mouthrinse.
    Author: Fine DH, Furgang D, Korik I, Olshan A, Barnett ML, Vincent JW.
    Journal: Am J Dent; 1993 Oct; 6(5):219-21. PubMed ID: 7880461.
    Abstract:
    Two double-blind controlled clinical studies were conducted to determine the efficacy of preprocedural rinsing with Cool Mint Listerine Antiseptic mouthrinse on the level of viable bacteria recovered from dental aerosols when generated immediately after and 40 minutes after rinsing. Eighteen healthy subjects participated in each study. In the first study, following a 24-hour no-oral-hygiene period, subjects received a 10-minute ultrasonic scaling of a randomly chosen half mouth, rinsed with either Cool Mint Listerine or a control, and received an ultrasonic scaling of the remaining half mouth. During each scaling period, aerosolized bacteria were collected on a sterile filter using a modified air-sampling device. The filters were overlaid on culture media, incubated aerobically, and colonies were counted. The second study followed the same basic design except that ultrasonic scaling was done for 5 minutes, and the post-rinsing sampling was performed following a 40-minute simulated dental treatment period. Rinsing with Cool Mint Listerine resulted in a 92.1% reduction in viable bacteria in aerosols generated immediately after rinsing and a 91.3% reduction in aerosols generated 40 minutes after rinsing. These reductions were significantly greater than control (P = 0.0001). These studies suggest that preprocedural rinsing with Cool Mint Listerine Antiseptic may potentially reduce the risk of cross contamination in the dental operatory.
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