Bacterial contamination of new dental unit waterlines and efficacy of shock disinfection

被引：1

作者：

Baudet, Alexandre ^{[1
,2
,3
]}

Lizon, Julie ^{[4
]}

Lozniewski, Alain ^{[5
,6
,7
]}

Florentin, Arnaud ^{[3
,4
,5
]}

Mortier, Eric ^{[1
,2
,8
]}

机构：

[1] Univ Lorraine, Fac Odontol, F-54500 Vandoeuvre Les Nancy, France

[2] CHRU Nancy, Serv Odontol, F-54000 Nancy, France

[3] Univ Lorraine, Inserm, INSPIIRE, Inserm, F-54000 Nancy, France

[4] CHRU Nancy, Dept Terr Hyg & Prevent Risque Infect DTPRI, F-54500 Vandoeuvre Les Nancy, France

[5] Univ Lorraine, Fac Med, F-54500 Vandoeuvre Les Nancy, France

[6] CHRU Nancy, Lab Microbiol Environm, F-54500 Vandoeuvre Les Nancy, France

[7] Univ Lorraine, Lab SIMPA Stress, IMmun, PAthogenes, F-54500 Vandoeuvre Les Nancy, France

[8] Univ Lorraine, CNRS, IJL, F-54000 Nancy, France

来源：

BMC MICROBIOLOGY | 2024年 / 24卷 / 01期

关键词：

Dental unit waterlines; Water microbiology; Microbial contamination; Biofilm; Disinfection; LEGIONELLA CONTAMINATION; PREVALENCE; ANTIBODIES;

D O I：

10.1186/s12866-024-03678-7

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Background Bacterial contamination of outlet water from dental unit waterlines (DUWLs) may lead to healthcare-associated infection. The aim of this study was to evaluate the contamination of DUWLs from new dental chairs before and after their initial shock disinfection with ICX Renew (R) and to determine the efficacy of this method of shock disinfection. Methods The microbiological quality of water samples obtained from the DUWLs of 17 new dental chairs installed at the University Hospital of Nancy, France, was assessed. Water samples were collected before and after an initial shock disinfection with one ICX Renew (R) treatment. Water analysis was used to assess total culturable aerobic bacteria (TCAB) at 22 degrees C and 36 degrees C, Legionella sp., Pseudomonas aeruginosa and total coliforms. Results All the DUWLs (17/17) were contaminated by viable aerobic bacteria (TCAB at 22 degrees C and 36 degrees C > 300 CFU/mL), including P. aeruginosa, before shock disinfection. After shock disinfection with ICX Renew (R), 24% of DUWLs (4/17) remained contaminated by aerobic bacteria (TCAB at 36 degrees C > 300 CFU/mL for 3/17) and P. aeruginosa (> 100 CFU/100 mL for 1/17). Conclusions To reduce the contamination of new dental chairs, initial shock disinfection of DUWLs should be performed to remove biofilms and bacteria from the DUWLs. To ensure the security of care, microbiological analysis of outlet water from DUWLs should be systematically performed before the first clinical use of a new dental chair to determine the efficacy of shock disinfection and the agreement of the results with the dental recommendations for water quality. Clinical trial number Not applicable.

引用

页数：7

共 40 条

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