Assessing the efficacy and cost of detergents used in a primary care automated washer disinfector

British Dental Journal
S WinterA J Smith

Abstract

Cleaning of re-usable medical devices is a critical control point in the decontamination cycle, although defined end-points of the process are controversial. Investigate cleaning efficacy and cost of different detergent classes in an automated washer disinfector (AWD) designed for dental practice. Loads comprised test soiled dental hand instruments in cassettes and extraction forceps. Residual protein assayed using the International standard method (ISO 15883-5:2005) 1% SDS elution with ortho-phthalaldehyde (OPA) or GBox technology (on instrument OPA analysis). Short (60 minutes) and long (97 minutes) AWD cycles were used with four different classes of detergents, tap water and reverse osmosis water. SDS elution analysis (N = 612 instruments) demonstrated four detergents with both wash cycles achieved equivalent cleanliness levels and below a threshold of 200 μg protein/instrument. GBox methodology (N = 575) using UK Department of Health threshold of 5 μg/instrument side demonstrated that tap water performed with the greatest efficacy for all types of instruments and cycle types. Using International standard methodology, different detergent classes had equivalence in cleaning efficacy. Cheaper detergents used in this study perf...Continue Reading

References

Feb 15, 2007·British Dental Journal·J BaggG Irvine
Jun 7, 2011·European Archives of Paediatric Dentistry : Official Journal of the European Academy of Paediatric Dentistry·A A DeanA Cairns
Sep 25, 2012·American Journal of Infection Control·Gordon W G SmithAndrew J Smith
Sep 27, 2012·Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz·UNKNOWN Commission for Hospital Hygiene and Infection Prevention (KRINKO), UNKNOWN Federal Institute for Drugs and Medical Devices (BfArM)

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Citations

Sep 30, 2020·Wound Repair and Regeneration : Official Publication of the Wound Healing Society [and] the European Tissue Repair Society·Reddy Sreekanth VootukuriGiuseppe Trigiante

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