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Year : 2017  |  Volume : 8  |  Issue : 1  |  Page : 59-63

Bacteriostatic effect of simvastatin on selected oral streptococci in vitro

Department of Restorative Dentistry, Kornberg School of Dentistry, Temple University, Philadelphia, PA, USA

Correspondence Address:
Eugene J Whitaker
Department of Restorative Dentistry, Kornberg School of Dentistry, Temple University, 3223 N. Broad Street, Philadelphia, PA 19140
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ccd.ccd_848_16

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Context and Objective: Simvastatin is a widely used cholesterol-lowering drug, which has been found to have a number of pleiotropic effects. The aim of this study was to evaluate the antimicrobial effectiveness of simvastatin against selected oral streptococci as determined by the minimum inhibitory concentration (MIC). Methods: Streptococcus mutans, Streptococcus sanguis, Streptococcus anginosus, and Streptococcus salivarius were the test microorganisms. The serial dilution method was used to determine the MIC of simvastatin against these organisms. The MIC was defined as the lowest concentration of simvastatin that completely inhibited growth of the test organisms. Results: The data indicate that simvastatin inhibits the growth of the test organisms, with MIC's ranging from 7.8 to 15.6 μg/ml. Conclusions: Simvastatin has MIC's against the selected bacteria that compare favorably with reported values for topical agents such as essential oil, chlorhexidine gluconate, and triclosan. The levels of simvastatin required to inhibit bacterial growth of oral bacteria exceed the reported levels of the drug found in plasma or crevicular fluid of patients who are treated with this cholesterol-lowering drug. However, clinical studies are warranted to investigate the potential use of simvastatin as a novel antiplaque agent that could be used in local drug delivery to the oral cavity of those patients who are prescribed this cholesterol-lowering drug.

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