伊朗Qazvin牙科学校牙科单位水线细菌污染评价

Mahshid Saffarpour, A. Peymani, S. Rahrotaban, Marjan Rahmani, M. Ebrahimi
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引用次数: 1

摘要

背景:牙科设备水线污染是牙科领域一个众所周知的问题。目的:本研究旨在评估2012年Qazvin牙科学校常见革兰氏阳性和阴性细菌对牙科单位水线的污染。材料和方法:本调查在卡兹温市牙科学校常规使用的24个牙科单位进行。在日常活动开始、冲洗30秒后、冲洗两分钟后和日常练习结束后,从每个单元的不同工作阶段取4个100 mL的无菌瓶样品。测定每个样品的菌落数,并计算平均菌落数。结果:24个单位在日常活动开始时均发现细菌污染,平均菌落计数为17850。16个单位冲洗30秒后,菌落数量减少到3250个;13个单位冲洗两分钟后,菌落数量减少到1837个。每日活动结束时受污染单位数为19个,平均菌落数为11170个。结论:冲洗牙机组水线是减少细菌污染物数量的有效措施。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of Bacterial Contamination in Dental Unit Waterlines of Qazvin' Dental School, Iran
Background: Contamination of dental unit waterlines is a well-known issue in the field of dentistry. Objectives: This study was designed to evaluate contamination of dental unit waterlines by common gram positive and negative bacteria in Qazvin's dental school during the year 2012. Materials and Methods: This survey was performed on 24 dental units routinely used in the dental school of the city of Qazvin. Four samples of 100 mL were obtained in sterile bottles from each unit at different work stages as follows: the beginning of daily activity, after flushing for 30 seconds, following two minutes of flushing, and after the end of daily practice. The number of bacterial colonies was determined for each sample and the mean colony number was calculated. Results: Bacterial contamination was found in all 24 units at the beginning of daily activity with a mean colony count of 17850. The number of colonies decreased to 3250 following 30 seconds of flushing in 16 units and later to 1837 after flushing for two minutes in 13 units. In addition, the number of contaminated units at the end of daily activity was 19 with a mean colony number of 11170. Conclusions: Flushing dental unit waterlines are an effective measure in reducing the number of bacterial contaminants.
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