【摘要】 目的观察一种以三氯羟基二苯醚为主要杀菌成分的复方消毒喷雾剂对染菌藻酸盐印模及超硬石膏模型的消毒效果。方法在藻酸盐印模和超硬石膏模型表面分别均匀涂布金黄色葡萄球菌、大肠杆菌、白假丝酵母菌、变异链球菌和枯草杆菌黑色变种芽孢悬液后,采用以三氯羟基二苯醚为主要成分的不同质量浓度的复方消毒喷雾剂(实验组)和碘伏消毒液(对照组)喷涂消毒5、10和15min,然后进行取样、接种、培养后进行菌落形成单位计数,以杀灭对数值对消毒效果进行评价。结果3000mg·L-1复方消毒喷雾剂作用10min以上可以有效杀灭印模和石膏表面的所有微生物。在作用时间相同情况下,同质量浓度消毒液对印模和石膏表面的消毒效果有统计学差异(P=0.000),对印模表面的消毒效果要优于石膏表面。结论以三氯羟基二苯醚为主要成分的复方消毒喷雾剂是有效的印模及模型消毒剂。更多还原

【Abstract】 Objective The disinfection efficiency of a compound disinfectant spray with trichloro hydroxyl diphenyl ether on dental impression and plaster model, which have been contaminated by pathogens, were evaluated in this study. Methods As experimental group, germ-free alginate impressions and plaster models were sprayed with the compound disinfectant of different density trichloro hydroxyl diphenyl ether or indophors for 5, 10 and 15 min, after which were smeared with five tested pathogens, including Staphylococcus aureus, Escherichia coli, Saccha-romyces albicans, Streptococcus mutans and black spore variants of Bacillus subtilis. The colonies were counted after sampling, inoculate and culture, which were used to deduce the killing logarithm value as the standard of the disinfecting efficiency. Results The compound disinfectant spray with 3 000 mg·L-1 trichloro hydroxyl diphenyl ether was effective to all tested pathogens for 10 min whatever on the impressions or the plaster models. The disinfectant spray with same concentration was more effective on the alginate impression than on the plaster model in the same time(P=0.000). Conclusion The compound disinfectant spray with trichloro hydroxyl diphenyl ether is an effective antiseptics for alginate impressions and plaster models.更多还原