Background: Environmental contamination and transmission of methicillin-resistant Staphylococcus aureus (MRSA) have been reported in dental health care settings. National professional dental associations recommend controlling surface contamination using disposable barriers or disinfection. Because these procedures may be costly, impractical, and/or toxic, we compared their effect against traditional detergent-based cleaning for decontaminating a dental chair sprayed with MRSA. Methods: Five MRSA strain suspensions were aerosolized to give a density of approximately 10 colony-forming units/cm(2) MRSA on the dental chair 5 minutes after dispersal. Three different decontamination protocols were applied: protocol 1: disposable barriers positioned before aerosol production and removed after 5 minutes; protocol 2: disinfection (wipe-rinse method) with 1: 10 dilution of 5.25% to 6.15% sodium hypochlorite solution; protocol 3: cleaning (wipe-rinse method) with a sodium-lauryl-sulphate-based detergent. Contact plates containing Mannitol Salt Agar were used to assess the level of MRSA contamination. Results: All 3 protocols decreased MRSA surface load by >99%. Residual densities on the dental chair were 0.030 +/- 0.010 (protocol 1), 0.029 +/- 0.09 (protocol 2), and 0.030 +/- 0.011 (protocol 3) colony-forming units/cm(2). Conclusion: Cleaning (wipe-rinse method) using a sodium-lauryl-sulphate-based detergent demonstrated equivalence with disposable barrier placement or disinfection-based protocol for reducing MRSA contamination on dental chairs. This has practical and cost implications for controlling MRSA transmission in dental health care settings. Copyright (c) 2013 by the Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.

Effect of disposable barriers, disinfection, and cleaning on controlling methicillin-resistant Staphylococcus aureus environmental contamination / Petti, Stefano; Polimeni, Antonella; Stephanie J., Dancer. - In: AMERICAN JOURNAL OF INFECTION CONTROL. - ISSN 0196-6553. - 41:9(2013), pp. 836-840. [10.1016/j.ajic.2012.09.021]

Effect of disposable barriers, disinfection, and cleaning on controlling methicillin-resistant Staphylococcus aureus environmental contamination

PETTI, Stefano;POLIMENI, Antonella;
2013

Abstract

Background: Environmental contamination and transmission of methicillin-resistant Staphylococcus aureus (MRSA) have been reported in dental health care settings. National professional dental associations recommend controlling surface contamination using disposable barriers or disinfection. Because these procedures may be costly, impractical, and/or toxic, we compared their effect against traditional detergent-based cleaning for decontaminating a dental chair sprayed with MRSA. Methods: Five MRSA strain suspensions were aerosolized to give a density of approximately 10 colony-forming units/cm(2) MRSA on the dental chair 5 minutes after dispersal. Three different decontamination protocols were applied: protocol 1: disposable barriers positioned before aerosol production and removed after 5 minutes; protocol 2: disinfection (wipe-rinse method) with 1: 10 dilution of 5.25% to 6.15% sodium hypochlorite solution; protocol 3: cleaning (wipe-rinse method) with a sodium-lauryl-sulphate-based detergent. Contact plates containing Mannitol Salt Agar were used to assess the level of MRSA contamination. Results: All 3 protocols decreased MRSA surface load by >99%. Residual densities on the dental chair were 0.030 +/- 0.010 (protocol 1), 0.029 +/- 0.09 (protocol 2), and 0.030 +/- 0.011 (protocol 3) colony-forming units/cm(2). Conclusion: Cleaning (wipe-rinse method) using a sodium-lauryl-sulphate-based detergent demonstrated equivalence with disposable barrier placement or disinfection-based protocol for reducing MRSA contamination on dental chairs. This has practical and cost implications for controlling MRSA transmission in dental health care settings. Copyright (c) 2013 by the Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.
2013
clinical contact surface; infection control; environmental contamination; dentistry; hai; hand-touch surface; healthcare-associated infections
01 Pubblicazione su rivista::01a Articolo in rivista
Effect of disposable barriers, disinfection, and cleaning on controlling methicillin-resistant Staphylococcus aureus environmental contamination / Petti, Stefano; Polimeni, Antonella; Stephanie J., Dancer. - In: AMERICAN JOURNAL OF INFECTION CONTROL. - ISSN 0196-6553. - 41:9(2013), pp. 836-840. [10.1016/j.ajic.2012.09.021]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/508815
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