Abstract：Objective To investigate the hygienic condition of dental water in Changsha City so as to provide technical guidance for medical institutions to formulate the improved disinfection and sterilization measures. Methods We sampled the dental water twice a year from 2013 to 2015. According to the Standards for Drinking Water Quality (GB 5749-2006), the total number of colonies ≤ 100 CFU/ml was considered as the qualified microbial indicator. Results Totally 520 dental water samples were collected during 2013-2015, and the qualified rate was 43.27%. 166, 174 and 180 dental water samples were respectively collected in 2013, 2014 and 2015, and the qualified rates were 23.49%, 49.36% and 55.56% respectively. There were statistically significant differences in the qualified rates among the three years (χ2=40.201, P<0.001). Stepwise logistic regression analysis showed that the good operating habit (OR=17.437), machine type (OR=1.954) and pipeline disinfection (OR=313.036) could improve the qualified rate of dental water. Compared with the municipal water supply, using the filtered municipal water supply and independent water storage system could improve the qualified rate of dental water. Conclusions The qualified rate of dental water in urban medical institutions in Changsha City from 2013 to 2015 was not high, but there was an improving trend during the three years. The operating habit, machine type, water source and pipeline disinfection are the important factors influencing the hygiene quality of dental water.
陈建勇, 王峰, 段可佳. 2013-2015年长沙市城区医疗机构口腔用水微生物污染状况及影响因素研究[J]. 实用预防医学, 2018, 25(2): 206-208.
CHEN Jian-yong, WANG Feng, DUAN Ke-jia. Microbial contamination of dental water and its determinants in urban medical institutions in Changsha City, 2013-2015. , 2018, 25(2): 206-208.
2018, Vol. 25 
