两种不同藻酸盐印模消毒效果对比研究

摘要

Objective To compare the effects of two different alginate impression disinfection methods. Methods Preparing 3 groups of alginate impression samples with different spetulation methods.Each group contains 30 samples,a total of 90.The first two groups were spetulated with distilled water and the third group with 0.1% Chlorhexidine solution. Three different bacteria solution was evenly spread on the surface of these samples after solidification.Then the first group was blank control group.The second group was exposed to 100uw ultraviolet rays for 5 minutes.The third group was placed in the air for 30 minutes. Bacteria culture was conducted with eluant.A comparison was made based on Bacterial number and Statistical analysis. Results Compared with blank control group,both ultraviolet radiation and chlorhexidine disinfection methods have significantly reduced the number of bacteria.The number of bacteria is less after ultraviolet radiation than chlorhexidine disinfection and there are significant differences. Conclusion Ultraviolet radiation disinfection is better than chlorhexidine disinfection.%目的:比较两种不同藻酸盐印模消毒的效果.方法:使用不同的调拌方法制取3组藻酸盐印模样本各30个,共计90个(前两组用蒸馏水调拌,第3组用0.1％的洗必泰溶液调拌).印模凝固后将3种不同菌液均匀涂布于印模表面.第1组为空白对照组,不做处理；第2组使用照射强度为100μW的紫外线照射5min;第3组用洗必泰溶液调拌,在空气中放置30min.3组印模洗脱表面残留的细菌进行培养,根据培养的细菌数量进行消毒效果的判定,并进行统计学分析(方差分析).结果:与空白对照组相比,紫外线照射消毒与洗必泰消毒后印模表面细菌数量明显减少；用紫外线照射后的印模表面的细菌数少于用洗必泰调和消毒的印模,两者存在显著性差异.结论:紫外线照射的消毒效果优于洗必泰.