摘要
目的通过对现有口腔综合治疗台水路加装反渗透和紫外线灯装置;随机提取水样做细菌培养,考察改装前后口腔综合治疗台出水口处水中异养菌总数的变化。方法随机选择5台使用中的口腔综合治疗台,拆掉手机,在口腔综合治疗台进水口加装反渗透系统,在口腔综合治疗台出水口(手机和三用水枪前)加装瞬时紫外线消杀器。随机在每台口腔综合治疗台手机接口处提取改装前后水样各5份;对这50份水样做细菌培养;结果记数比较。结果未加装反渗透和紫外线装置的口腔综合治疗台手机接口处水样平均菌落总数为219 cfu/mL,加装反渗透和紫外线装置的口腔综合治疗台手机接口处水样平均菌落总数为8 cfu/mL。结论口腔综合治疗台水路加装反渗透和紫外线装置后的水质变化明显,能达到欧洲口腔医疗用水要求,也符合我国《生活饮用水卫生标准》。
Objective To refit the existing dental unit water lines with reverse osmosis systems and ultraviolet lamp devices; before and after modification,samples were collected randomly for bacterial culture; investigation of changes of total heterotrophic bacteria in outlet water from dental unit water lines was made. Methods Randomly select five dental units in use, remove the handsets, refit dent- al unit water lines with reverse osmosis systems at the water intakes; install instantaneous ultraviolet disinfection devices at the water outlets of dental unit water lines in front of the handsets and three-way water syringes. Draw 5 samples randomly before and after modifi- cation from mobile interface of each dental unit ; take the 50 water samples for bacterial culture; numbers of bacteria were compared. Results Average bacterial colonies of water samples from the handset interfaces of dental units without installation of reverse osmosis systems and ultraviolet devices were 219 cfu/mL. Average bacterial colonies of water samples from the handset interfaces of dental units with installation of reverse osmosis systems and ultraviolet devices were 8 cfu/mL. Conclusions Dental unit water lines with reverse osmosis systems and uv devices make a remarkable change in water quality,which not only can easily meet the European oral medical water requirements, but also meets domestic Sanity Standard for Drinking Water.
出处
《口腔医学》
CAS
2013年第8期529-530,共2页
Stomatology
基金
潍坊市卫生局科研基金(2011038)
关键词
口腔综合治疗台水路
污染
反渗透
dental unit water lines
contaminatian
reverse osmosis
