Abstract
Different proportions of LZB-GC nano-silver antibacterial agent was added into the alginate impression materials. The antibacterial ratios of antibacterial alginate impression material on Escherichia coli and Staphylococcus aureus were investigated, and the physical properties, including coagulation time, compressive strength, compressive strain, deformation restorability and fluidity were characterized by standards method. The results showed that as the content of LZB-GC increased from 0.125% to 0.5%, the antibacterial ratios increased(P<;0.05), when the content of LZB-GC was 0.5% or more, the antibacterial ratios could be up to 99%. It had no significant effect on the physical properties of the alginate impression material when the added content of LZB-GC was less than 2%(P>;0.05). In conclusion, the optimal adding ratio of the LZB-GC antibacterial agent in the alginate impression material was 0.5%, which could meet the requirements of clinical application.
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