Cleaning efficacy of an experimental rinsing/disinfecting solution

Objectives: The aim of the study was to evaluate the cleaning efficacy of an experimental rinsing/disinfecting solution (RDS) for general dental use on proteins and lipids. Methods: Dye solution containing a commercial mayonnaise and blue dye was painted onto the surface of alginate impression, resinous denture, self-cured resin and Au-Ag-Pd alloy as cast. RDS was applied onto surfaces for 30sec and rinsed with water for 30sec. The remained dye was removed with acetone and determined by means of photospectormeter. Clearance rate was calculated by the following formula; (w-x)/w×100(%), where x=y/2.3716, w: painted dye solution(g), y: absorbance at 630nm, x: remained dye solution (g). For control, the surface was water-rinsed for 60 sec. Results: Clearance rates (RDS/control (%)) for alginate impression, resinous denture, self-cured resin and alloy were 98.5/6.2, 99.3/51.0, 99.3/53.3 and 99.9/63.9, respectively. Significant difference was found between RDS and control (p<0.05). It has been reported RDS has no influence on the accuracy of impression materials and disinfecting effect against S. aureus, C. albicans, S. mutans, A. viscosus, P. gingivalis and A. actionomycetemcomitans. The cleaning effect for proteins and lipids may facilitate the disinfecting effect of RDS. Conclusion: RDS has a promising cleaning and disinfecting efficacy for dental materials.