PDF(Pubmed)
Abstract：
In dentistry, nosocomial infection poses a great challenge to clinicians. The microbial contamination of water in dental unit waterlines (DUWLs) is ubiquitous. Such infected DUWLs can transmit oral microbes in the form of aerosols. Previous studies have suggested treating DUWLs with various disinfectants to reduce cross-contamination. The literature lacks a comparative evaluation of the effect of the use of 0.2% chlorhexidine (CHX) and 0.1% sodium hypochlorite (NaOCl) in DUWLs on aerosolized bacteria generated during dental procedures.
To compare the effect of NaOCl and CHX in DUWLs on aerosolized bacteria generated during restorative and endodontic procedures.
A total of 132 patients were equally divided into three groups (n = 44 in each group) according to the content of DUWL as follows. Group I-0.1% NaOCl Group II-0.2% CHX Group III-distilled water (Positive control) One-way ANOVA was performed and the Kruskal-Wallis test was used for intergroup comparison.
For the restorative procedure, inter-group comparison of mean colony-forming units (CFU) scores showed a statistically significant difference between the groups (p - .001) with the score of group 3 higher than group 2 followed by group 1. For the endodontics, an inter-group comparison of CFU scores showed a statistically significant difference between the groups (p - .003) with the mean score in group 1 being the lowest and group 3 being the highest.
The addition of NaOCl or CHX in DUWLs shows an effective reduction in aerosolized bacteria compared to distilled water.
To compare the effect of NaOCl and CHX in DUWLs on aerosolized bacteria generated during restorative and endodontic procedures.
A total of 132 patients were equally divided into three groups (n = 44 in each group) according to the content of DUWL as follows. Group I-0.1% NaOCl Group II-0.2% CHX Group III-distilled water (Positive control) One-way ANOVA was performed and the Kruskal-Wallis test was used for intergroup comparison.
For the restorative procedure, inter-group comparison of mean colony-forming units (CFU) scores showed a statistically significant difference between the groups (p - .001) with the score of group 3 higher than group 2 followed by group 1. For the endodontics, an inter-group comparison of CFU scores showed a statistically significant difference between the groups (p - .003) with the mean score in group 1 being the lowest and group 3 being the highest.
The addition of NaOCl or CHX in DUWLs shows an effective reduction in aerosolized bacteria compared to distilled water.
摘要：
背景：在牙科，医院感染对临床医生提出了巨大的挑战。牙科单元水线(DUWL)中的水的微生物污染是普遍存在的。这种感染的DUWL可以气溶胶形式传播口腔微生物。先前的研究已经建议用各种消毒剂处理DUWL以减少交叉污染。文献缺乏在DUWL中使用0.2%氯己定(CHX)和0.1%次氯酸钠(NaOCl)对牙科手术期间产生的雾化细菌的影响的比较评价。
目的：比较DUWL中NaOCl和CHX对修复和牙髓手术期间产生的雾化细菌的影响。
方法：将132例患者按DUWL含量分为3组，每组44例。I组-0.1%NaOCl组II-0.2%CHX组III-蒸馏水(阳性对照)进行单向ANOVA,并使用Kruskal-Wallis检验进行组间比较。
结果：对于恢复性程序，平均菌落形成单位(CFU)评分的组间比较显示,两组间有统计学差异(p-.001),第3组的评分高于第2组,其次是第1组.对于牙髓患者来说,CFU评分的组间比较显示,两组间的差异有统计学意义(p-.003),第1组的平均评分最低,第3组的平均评分最高.
结论：与蒸馏水相比，在DUWL中添加NaOCl或CHX显示出雾化细菌的有效减少。
目的：比较DUWL中NaOCl和CHX对修复和牙髓手术期间产生的雾化细菌的影响。
方法：将132例患者按DUWL含量分为3组，每组44例。I组-0.1%NaOCl组II-0.2%CHX组III-蒸馏水(阳性对照)进行单向ANOVA,并使用Kruskal-Wallis检验进行组间比较。
结果：对于恢复性程序，平均菌落形成单位(CFU)评分的组间比较显示,两组间有统计学差异(p-.001),第3组的评分高于第2组,其次是第1组.对于牙髓患者来说,CFU评分的组间比较显示,两组间的差异有统计学意义(p-.003),第1组的平均评分最低,第3组的平均评分最高.
结论：与蒸馏水相比，在DUWL中添加NaOCl或CHX显示出雾化细菌的有效减少。
