Evaluation of Antimicrobial Activity of Disinfectants on Acrylic Resins

Purpose: The aim of this study is to evaluate effectiveness of regularly used disinfectant solution in the disinfection of acrylic resin specimens contaminated with Candida albicans. Materials and methods: Thirty six acrylic resin specimens contaminated in vitro with 1.5×10 8 cfu/ml suspensions of microorganisms were immersed in disinfectants for 10 minutes, the control group was not submitted to any disinfection process. Final counts of microorganisms per ml were performed by plating method for evaluation of microbial level reduction. Results were compare statistically by wilcoxon test (p<0.05) Results: The results showed that 1% sodium hypochlorite and 0.2% w/v chlorhexidine gluconate were most effective against Candida albicans, followed by 3.8% sodium perborate. Conclusion: within the limits of this study, it could be concluded that 1% sodium hypochlorite, 0.2% chlorhexidine gluconate and 3.8% sodium perborate are valid alternatives for disinfection of acrylic resins.