2种牙科石膏模型喷雾消毒效果的比较

Experimental evaluation of the spraying disinfection efficiency on dental models

目的:观察一种新型喷雾消毒剂对牙科石膏模型的消毒效果。方法:自制2.5 cm×2.5 cm×1 cm的石膏试件并消毒,表面涂布金黄色葡萄球菌、大肠杆菌、白假丝酵母菌、变形链球菌、黏性放线菌的混合菌液,分别用麦瑞斯消毒液和戊二醛消毒剂对样本进行喷雾法消毒,5 min和15 min后取样、接种、培养,进行菌落计数,并与另一组染菌而未消毒者进行比较,以评价消毒剂的消毒效果。采用SPSS12.0软件包对数据进行单因素方差分析。结果:麦瑞斯消毒液喷雾消毒5 min,可有效消灭所有的样本菌,且15 min后仍有较好的抑菌效果,其消毒效果显著优于戊二醛消毒剂。结论:麦瑞斯喷雾消毒剂对石膏模型的消毒效果快速而有效。

PURPOSE： To evaluate the disinfect effect after spraying a new kind of disinfectant on the dental plaster models.METHODS： The germ-free plaster samples,which were smeared with bacteria compound including Staphylococcus aureus,Escherichia coli,Saccharomyces albicans,Streptococcus mutans and Actinomyces viscosus were sprayed with disinfectants（CaviCide） and glutaraldehyde individually.In one group（5 minutes later） and another group（15 minutes later）,the colonies were counted for statistical analysis after sampling,inoculating,and culturing which were used for evaluation of disinfecting efficiency.ANOVA was performed using SPSS12.0 software package.RESULTS： All sample bacteria were eradicated after spraying disinfectants（CaviCide） within 5 minutes and effective bacteria control was retained after 15 minutes.There was significant difference between the disinfecting efficiency of CaviCide and glutaraldehyde.CONCLUSIONS： The effect of disinfection with spraying disinfectants（CaviCide） on dental models is quick and effective.Supported by Research Fund of Science and Technology Commission of Shanghai Municipality（08DZ2271100） and Fund of Shanghai Municipal Health Bureau（2010268）.