CHAPTER 20: PRINCIPLES AND TECHNIQUES OF DISINFECTION Flashcards
Clinical contact surfaces
directly contaminated by direct spray or spatter
Single use items
aka disposable items. (usually made of plastic)
Pre-cleaning
to clean before disinfecting
reduces the number of micro organisms and removes bioburden
soap and water can be used for pre cleaning. true or false?
true
what are the three levels of disinfection
high level
intermediate level
low level
what is a high level disinfection
high level disinfectant with a short contact time and a sterilant when used with a prolonged contact time
what is intermediate level disinfection
hospital disinfectant w/ tuberculocidal activity
used in dental offices
what is low level disenfection
non-tuberculocidal
not to be used in dental offices
are spores killed during disinfecting procedures?
no
what is a disinfectant
chemicals that kill microorganisms (some not all) to inanimate surfaces
what is antiseptic
antimicrobial agents that are used on living tissue (skin)
ex. hand sanitizer
what is a sterliant?
kills ALL microorganisms
sporicidal
chemical capable of killing spores
virucidal
product capable of killing viruses
what is sanicloth plus
germicidal disposable cloth
residual activity
action that continues long after initial application
iodophors
intermediate level hospital disinfectant with tuberculocidal action
( may also be used as an immersion disinfectant for nonhydrocolloid impressions)
sodium hypochlorite
house hold bleach (intermediate disinfection)
immersion disinfectants
chemicals that can be used for sterilization or high level disinfection.
glutaraldehyde
high level disinfectant/sterilant. it can be used as a liquid sterilant when the immersion time is greatly incerased (10 hours)
chlorine dioxide
high level disinfectant/sterilant
cold soak
soaking instruments in chemicals for 10 hours for sterilization
HVE
high volume evacuation
reduces escape of saliva and spatter from patients mouth
what type of fabric should be avoided in a dental patient room/lab and why
carpet. collects more bacteria and harder to clean
what time should an acceptable disinfectant be able to kill Mycobacterium bacteria (TB)
10 mins or less
what are the two methods used to deal with surface contamination?
prevent (barriers)
pre-clean and disinfect between patients
two intermediate level disinfectants
iodophor
phenols
three high level disinfectant/sterilants
glutaraldehyde
chlorine dioxide
oral pthaladehyde
the cdc guidelines for infection control divides environmental surfaces into:
clinical contact surfaces
housekeeping surfaces
clinical surfaces are classified under which 3 catergories?
touch
transfer
splash, spatter and droplet.
