臭氧水溶液对口腔综合治疗台管道的消毒效果

摘要/Abstract

摘要： 目的：观察臭氧水溶液对口腔综合治疗台管道系统（Dental unit waterlines, DUWLs）的消毒效果。方法：每天早晨门诊开始前使用臭氧水消毒机生成浓度约2.0mg/L的臭氧水溶液对南京医科大学附属口腔医院急诊综合科4台口腔综合治疗台水路系统进行冲洗消毒，实验第1、3、5、8天分别采集消毒前、消毒后即刻、门诊结束后三用枪及高速手机出水口水样，经30℃需氧（空气条件）恒温培养7天后进行菌落计数，采用SPSS 22.0软件进行统计分析。结果：口腔综合治疗台三用枪出水口水样可培养细菌总数（total viable counts, TVC）平均为（49550.00±1117.52）CFU/ml，高速手机为（63875.00±8842.08）CFU/ml。第8天消毒后三用枪出水口水样TVC降低至（83.25±42.99）CFU/ml，高速手机降至（591.50±177.26）CFU/ml。三用枪和高速手机每天的杀菌率平均值分别达到97.48%和95.11%。实验期间每天的细菌回升量呈下降趋势。结论：DUWLs污染严重，使用2.0mg/L臭氧水溶液冲洗消毒能有效抑制管道菌群，改善水质。

关键词: 口腔综合治疗台管道系统, 臭氧水溶液, 消毒

Abstract: Objective: To observe the efficacy of ozonated water in the decontamination of dental unit waterlines. Methods: Dental unit waterlines (DUWLs) of 4 dental chair units at the Affiliated Hospital of Stomatology NJMU were flushed and disinfected every morning by 2.0mg/L ozonated water. On the 1st,3rd,5th,8th day of the experiment, water samples were collected from triple syringes and handpieces before disinfection, immediately after disinfection, and at the end of the day. SPSS 22.0 software was used for statistical analysis. Results: The average total viable counts (TVC）tested from the water samples obtained from triple syringes and high-speed handpieces before disinfection reached (49550.00±1117.52) and (63875.00±8842.08) CFU/ml, respectively. After disinfection on the 8th day, TVC of the triple syringes and high-speed handpieces decreased to (83.25±42.99) and (591.50±177.26) CFU/ml, respectively. The average daily sterilizing rates of triple syringes and high-speed handpieces were 97.48% and 95.11%, respectively. During the experiment, the daily bacterial recovery showed a downward trend. Conclusion: DUWLs were polluted seriously. Flushing and disinfecting DUWLs with 2.0mg/L ozonated water can effectively inhibit the flora in the waterlines and improve the water quality.

Key words: dental unit waterlines, ozonated water, disinfection

中图分类号:

R187.1

孙荣王娟梅予锋. 臭氧水溶液对口腔综合治疗台管道的消毒效果[J]. 口腔医学, 2020, 40(6): 521-525.

Juan Wang. Efficacy of ozonated water in the decontamination of dental unit waterlines[J]. Stomatology, 2020, 40(6): 521-525.

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