Durability of in vitro antimicrobial effect of polymethylmethacrylate denture base containing silver-supported antimicrobial agent of nanometer level
- VernacularTitle:纳米载银树脂基托体外抗菌效果的持久性
- Author:
Riyue YU
;
Yongsheng ZHOU
;
Hailan FENG
- Publication Type:Journal Article
- Keywords:
Silver ion;
Antimicrobial agent;
Polymethylmethacrylate;
Denture base;
Durability of antimicrobial effect
- From:
Journal of Practical Stomatology
2000;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To study the durability of the antimicrobial effect of polymethylmethacrylate (PMMA) denture base containing silver-supported antimicrobial agents of nanometer level against Streptococcus mutans and Candida albicans in vitro. Methods:The antimicrobial PMMA resin bases with the antimicrobial agent STR-1 at concentration of 5 mg/ml were prepared. Then the samples were divided into 4 groups: positive control group, the group immersed in distilled water at 57 ℃ for 14 days, the group irradiated by ultraviolet for 8 hours, and the group irradiated by ultraviolet for 8 hours after immersed in distilled water at 57 ℃ for 14 days. Then the inhibition ratios of the 4 groups against Streptococcus mutans and Candida albicans in vitro were tested. Results:The inhibition ratios of the 4 groups against Streptococcus mutans were 99%, 96%, 98%, and 90% in turn. The inhibition ratios of the 4 groups against Candida albicans were 91%, 82%, 90%, and 80% respectively. Conclusion: The antimicrobial effect of PMMA denture base containing silver-supported antimicrobial agents STR-1 of nanometer level at concentration of 5 mg/ml against Streptococcus mutans and Candida albicans in vitro is durable.
