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