Back to Journals » Risk Management and Healthcare Policy » Volume 5

Contamination of irrigation systems of dental units with Cryptosporidium species in Alexandria, Egypt: a neglected disinfection pitfall

Authors Khadr A, Farouk, Abdul-Ghani R, Hassanein F

Received 21 June 2012

Accepted for publication 6 July 2012

Published 17 August 2012 Volume 2012:5 Pages 93—95


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 5

Azza Hassan,1 Hanan Farouk,1 Rashad Abdul-Ghani,2,3 Faika Hassanein1

1Tropical Health Department, High Institute of Public Health, Alexandria University, Alexandria, Egypt; 2Parasitology Department, Medical Research Institute, Alexandria University, Alexandria, Egypt; 3Department of Medical Parasitology, Faculty of Medicine and Health Sciences, Sana’a University, Sana’a, Yemen

Purpose: To investigate the contamination of the dental irrigation systems with Cryptosporidium species in Alexandria, Egypt.
Methods: Forty water samples from all 20 working dental irrigation machines in a dental center in Alexandria were included in the study. Water samples were taken from the handpieces of dental irrigation machines in all studied units. After filtration through a membrane filter, water sample residues were stained using modified Ziehl–Neelsen staining and examined microscopically for Cryptosporidium spp.
Results: Cryptosporidium spp. was found as a contaminant in 27.5% of water samples taken from dental irrigation machines.
Conclusion: This indicates a contamination by the public water supplies to which these dental irrigation machines are connected. This disinfection pitfall may pose an infection risk to those seeking dental care.

Keywords: Cryptosporidium, contamination, dental irrigation machines, Alexandria

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.