Mycological contamination in dental unit waterlines in Istanbul, Turkey

Studies on dental units (DUs) are conducted either for the prevention or the reduction of the density of bacterial contamination in dental unit waterlines (DUWLs). However, the existence of fungi in the these systems requires more attention. During dental treatment, direct contact with water contami...

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Bibliographic Details
Published in:Brazilian journal of microbiology 2013-07, Vol.44 (3), p.977-981
Main Authors: Kadaifciler, Duygu Göksay, Ökten, Suzan, Sen, Burhan
Format: Article
Language:English
Subjects:
Bacteria
Biofilms
Colony Count, Microbial
Dental care
Dental equipment
Dental Offices
Drinking Water - microbiology
Fungi - classification
Fungi - isolation & purification
Humans
MICROBIOLOGY
Prevalence
Research Paper
Turkey
Water quality
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Summary:Studies on dental units (DUs) are conducted either for the prevention or the reduction of the density of bacterial contamination in dental unit waterlines (DUWLs). However, the existence of fungi in the these systems requires more attention. During dental treatment, direct contact with water contaminated with fungi such as Candida, Aspergillus, or inhalation of aerosols from high-speed drill may cause various respiratory infections, such as asthma, allergies, and wounds on mucose membranes, especially on immunocompromised patients and dentists. The aims of this study are to investigate the number and colonization of fungi in DUWLs in the city of Istanbul, Turkey. Water samples were collected from air-water syringes, high-speed drills, and inlet waters from 41 DUs. The aerobic mesophilic fungi count in high- speed drills was higher than inlet waters and air-water syringes. Non-sporulating fungi were found in 7 DUs. The isolated fungi were identified as Penicillium waksmanii, Cladosporium spp., Penicillium spp., Candida famata, Cryptococcus laurentii, Candida guilliermondii, Penicillium verrucosum, Aspergillus pseudoglaucus, Penicillium decumbens, and Acremonium sp. Some of these fungal genera are known as opportunistic pathogens that led to respiratory diseases such as allergic rhinits. This study shows the importance of regular control of mycological contamination on water at DUs.
ISSN:1517-8382
1678-4405
1678-4405
DOI:10.1590/S1517-83822013000300049