the effect of heat-killed candida albicans and dentin powder on the antibacterial activity of chlorhexidine solution

introduction: the purpose of this study was to compare the inhibitory effect of heat-killed candida albicans and dentin powder on the antibacterial activity of chlorhexidine (chx) against enterococcus faecalis and streptococcus sanguis . materials and methods: the antibacterial effect of each group was determined by measuring the zone of inhibition diameter in millimeters after incubation at 37°c for 24 hours in a humid atmosphere. each test was repeated three times. data were analyzed using anova and tukey’s test. results: results indicated that both heat-killed c. albicans and dentin powder decreased t he antibacterial activity of chx against both tested bacteria significantly ( p <0.05). conclusion : in conclusion, both heat-killed candida albicans and dentin powder reduced the antibacterial activity of chx significantly.