An Evaluation of Two Systems for the Management of the Microbiological Quality of Water in Dental Unit Waterlines: Hygowater ® and IGN Calbénium ®

Damien Offner and Anne-Marie Musset
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Damien Offner: INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, F-67000 Strasbourg, France
Anne-Marie Musset: INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, F-67000 Strasbourg, France

IJERPH, 2021, vol. 18, issue 10, 1-12

Abstract: Water in dental unit waterlines (DUWL) represents a risk for vulnerable patients if its microbiological quality is not controlled. The aim of this prospective study was to evaluate two systems for its management under real conditions: Hygowater ® and IGN Calbenium ® . Samples of the output water of DUWL were obtained for 5 previously contaminated units connected to Hygowater ® , and 5 non-contaminated units connected to IGN Calbenium ® , which was already effective for more than 1 year, as a control group. Samples were regularly collected up to 6 months after the implementation of Hygowater ® , and were then cultured and analyzed. With IGN Calbenium ® , except for a technical problem and a sample result in one unit at 6 months (Heterotrophic Plate Count (HPC) at 37 °C of 66 colony forming units (cfu)/mL), the results showed an absence of contamination. Hygowater ® took a couple of weeks to be effective on initially contaminated DUWL (over 200 cfu/mL for all the units), then showed its efficacy for 2 months (HPC at 37 °C with a mean of 40.2 ufc/mL, and HPC at 22 °C with a mean of 0.2 ufc/mL). At 6 months, results were satisfactory for HPC at 22 °C (mean of 12 ufc/mL), but HPC at 37 °C gave non-satisfactory results for 4 of the 5 units (mean of 92.2 ufc/mL). Both systems have an effect on the microbiological quality of DUWL. IGN Calbenium ® appears to be more reliable on a long-term basis.

Keywords: disinfection; dentistry; safety; infection control; contamination; water (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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