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MDA Chapter 20

Principles & Techniques of Disinfection

TermDefinition
antiseptic Substance for killing microorganisms on the skin
bioburden Blood, saliva, and other body fluids
broad spectrum Capable of killing a wide range of microbes
Clinical contact surface Surface touched by contaminated hands, instruments, or spatter during dental treatment
disinfectant Chemical used to reduce or lower the number of microorganisms on inanimate objects
environmental surfaces surface within a dental/healthcare facility that is not directly involved in patient care, but that may become contaminated during the course of treatment
fungicidal A product capable of killing fungi
Glutaraldehyde Solution used for high-level disinfection and sterilization
housekeeping surface Surface that is not contaminated during dental treatment
Immersion disinfectant Used for soaking heat sensitive instruments
high-level disinfectant Hospital disinfectant with tuberculocidal activity
intermediate level disinfectant Liquid disinfectant with EPA registration as a hospital disinfectant with tuberculocidal activity. It is used for disinfecting operatory surfaces.
precleaning Removal of bioburden before disinfection
residual activity Action that continues long after initial application, as with disinfectants
reuse life Time period that a disinfectant should remain effective during use and reuse
shelf life How long a product may be stored before use.
single-use items Items that are used on only one patient and then are thrown away.
Sodium hypochlorite Common household bleach; an effective disinfectant.
sporicidal Capable of killing bacterial spores
sterilant Agent that kills all microorganisms
sterilzation involves destroying all microorganisms, including spores
surface barrier Fluid resistant material used to cover surfaces likely to become contaminated
touch surface Surface directly touched and contaminated during procedures
transfer surface Surface not directly touched but often contacted by contaminated instruments
tuberculocidal Capable of inactivating tuberculosis causing microorganisms
virucidal Capable of killing some viruses
Created by: stacyb27
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