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Contamination of a Dental Unit Water Line System by Legionella Pneumophila in the Mashhad School of Dentistry in 2009

AUTHORS

B Ajami 1 , K Ghazvini 1 , T Movahhed 2 , * , N Ariaee 1 , MT Shakeri 1 , S Makarem 1

1 Department of Pediatric Dentistry, Dental School, Mashhad University of Medical Sciences, Iran

2 Assistant Professor of Pediatric Dentistry, Dental School, Mashhad University of Medical Sciences, movahhedt@mums.ac.ir, Iran

How to Cite: Ajami B, Ghazvini K, Movahhed T, Ariaee N, Shakeri M, et al. Contamination of a Dental Unit Water Line System by Legionella Pneumophila in the Mashhad School of Dentistry in 2009, Iran Red Crescent Med J. Online ahead of Print ; 14(6):376-378.

ARTICLE INFORMATION

Iranian Red Crescent Medical Journal: 14 (6); 376-378
Article Type: Brief Report
Received: September 28, 2011
Accepted: December 12, 2011

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Abstract

Background: Dental unit waterline system is considered potential source for contamination with Legionella species. The aim of this study was to determine if contamination of a dental unit water line system by Legionella pneumophila serogroup1 in the Mashhad School of Dentistry occurred in 2009.

 

Methods: A total of 52 dental units were selected from all clinical departments of the Mashhad School of Dentistry. Samples of water were collected from outlets of water/air spray, high-speed dental hand pieces and water cup fillers. Samples were tested via the ELISA method.

 

Results: At the beginning of the work day, a total of 36.1 percent of dental units were contaminated by Legionella pneumophila serogroup 1.

 

Conclusion: Infection control of the dental unit water line system regarding legionella in the Mashhad School of Dentistry is a challenge and engineering controls should be used in contaminated clinics.

Keywords

Legionella Dental unit water line system Contamination Iran

© 0, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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