• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Monitoring and Assessment >Bacterial contamination of dental unit waterlines
【24h】

Bacterial contamination of dental unit waterlines

机译：牙科设备水线的细菌污染

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Safety of patients and dental personnel requires the appropriate microbiological water quality in dental units. During treatment, patients and dental workers are exposed both to direct contact with bacteria-contaminated water in the form of splatter and with contaminated water aerosol emitted during work by unit handpieces, including rotating and ultrasonic instruments. The aim of the study was to determine the qualitative and quantitative contamination of water in dental unit reservoirs with aerobic and facultative anaerobic bacteria. The study material included water sampled from 107 dental unit reservoirs located in dental surgeries of public health centres. Conventional microbiological methods were used to identify microorganisms. The study shows that the contamination of water in dental unit reservoirs with aerobic and facultative anaerobic bacteria is commonplace. The mean concentration of mesophile bacteria in dental unit reservoir water exceeded 1.1 × 105 cfu/ml. The prevailing species were Gram-negative bacteria of the families Burkholderiaceae, Pseudomonadaceae, Ralstoniaceae and Sphingomonadaceae. The most numerous bacteria were Ralstonia pickettii, constituting 49.33 % of all the identified aerobic and facultative anaerobic bacteria. Among Gram-positive rods, the most numerous were bacteria of the genus Brevi-bacterium (5.83 %), while the highest percentage shares (13.25 %) of all Gram-positive microorganisms were found for Actinomyces spp. The study confirms the necessity of regular monitoring of microbial contamination of dental unit waterlines (DUWL) and use of various water treatment procedures available to disinfect DWUL.
机译：患者和牙科人员的安全需要牙科单位具有适当的微生物水质。在治疗过程中，患者和牙科工作人员会直接接触飞溅物形式的被细菌污染的水，以及工作中包括旋转和超声仪器在内的手持设备所散发的污染水气溶胶。这项研究的目的是确定有氧和兼性厌氧细菌对牙齿单位容器中水的定性和定量污染。研究材料包括从位于公共卫生中心牙科手术室中的107个牙科治疗室中抽取的水。使用常规的微生物学方法来鉴定微生物。研究表明，好氧和兼性厌氧细菌对牙科设备储库中的水的污染是司空见惯的。牙齿单位储水中嗜温菌的平均浓度超过1.1×105 cfu / ml。占优势的物种是伯克霍尔德科，假单胞菌科，雷尔氏菌科和Sphingomonadaceae的革兰氏阴性细菌。最多的细菌是Ralstonia pickettii，占所有已鉴定的需氧和兼性厌氧细菌的49.33％。在革兰氏阳性杆中，数量最多的是短杆菌属细菌（5.83％），而放线菌属的所有革兰氏阳性微生物的比例最高（13.25％）。这项研究证实了定期监测牙科用水线（DUWL）微生物污染的必要性，并使用各种可用的水处理程序对DWUL进行消毒。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号