950-032 D1C1 manual ver. E
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PAGE 15
CLEANING AND DISINFECTING DENTAL UNITS AND ENVIRONMENTAL SURFACES
GENERAL GUIDELINES
After treatment of each patient and at the completion of daily work activities, countertops and dental unit
surfaces that might have been contaminated with patient material or when the surface is contaminated
with biological material must be cleaned with disposable toweling (for example PDI Super Sani Cloth)
and water as necessary. Then disinfect surfaces with a suitable chemical germicide (for example DisCide
Ultra Disinfectant Spray).
The CDC recommends using a chemical germicide registered with the EPA as a “hospital disinfectant”
and labeled for “tuberculocidal” (i.e., mycobactericidal) activity to disinfect surfaces that have been soiled
with patient material. These intermediate-level disinfectants include phenolics, iodophors, and chlo-
rine-containing compounds. Because mycobacteria are among the most resistant groups of microorgan-
isms, germicides effective against mycobacteria should be effective against many other bacterial and viral
pathogens.
Low-level disinfectants—EPA-registered “hospital disinfectants” that are not labeled for “tuberculocidal”
activity (e.g., quaternary ammonium compounds)—are appropriate for general housekeeping purposes
such as cleaning floors, walls, and other housekeeping surfaces. The CDC does not recommend using
intermediate- and low-level disinfectants to reprocess critical or semi critical dental instruments.
CDC Guideline for Disinfection and Sterilization in Healthcare Facilities, 2008; Centers for Disease Con-
trol and Prevention. Guidelines for Infection Control in Dental Health-Care Settings— 2003. MMWR
2003;52(No. RR-17):[inclusive page numbers]. FDA Processing/Reprocessing Medical Devices in Health
Care Settings: Validation Methods and Labeling DRAFT GUIDANCE May 2, 2011.
8 - USING YOUR WORKSTATION CONT’D
