Evaluation of minimum inhibitory and minimum bactericidal concentration of nano-silver base inorganic anti-microbial agent (Novaron?) against streptococcus mutans

摘要

Objective:We attempted to find the possibility of determining the minimum inhibitory concentration and minimum bactericidal concentration needed for nano-silver base inorganic anti-microbial agent (Novaron? AG 300, AG 1100) against Streptococcus mutans in vitro using broth dilution assay.Materials and Methods:An ampoule of freeze-dried S. mutans NCTC reference strain was revived, and the colony-forming units (CFU) were calculated. The MIC and MBC was determined by broth dilution assay using different concentrations of Novaron? AG 300 and Novaron? AG 1100 against 1 × 105 CFU/ml of S. mutans.Results:The MIC and MBC of Novaron? AG 300 and Novaron? AG 1100 against S. mutans were found to be 40 μg/ml.Conclusions:Novaron? has anti-bacterial effect against S. mutans. Further studies are needed to explore the applicability of these silver-supported anti- microbial agents in clinical dentistry.