Exam (elaborations)
DENTAL HYGIENE NATIONAL BOARD EXAM 2024/2025
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DENTAL HYGIENE NATIONAL BOARD EXAM 2024/2025
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Dental Hygiene National Board EXAM2024/2025
What are some examples of bio-hazard waste? - Precise Answer
✔✔Sharps, items that drip of blood and/or saliva, and hard and soft
tissues removed from patient
The bio-hazard waste or regulated true or false? - Precise Answer
✔✔True
When should we change our mask? - Precise Answer ✔✔When it
becomes wet or soiled with every patient. That includes your fluids as
well.
What is the purpose of PPE? - Precise Answer ✔✔Is to minimize the
exposure to Aerosol, Spatter, Direct transmission, and Indirect
transmission (ASDI)
Do disinfectants kill spores? - Precise Answer ✔✔NO
What are some types of disinfectants? - Precise Answer ✔✔Chlorine-
based compounds, iodophors, phenols, quaternary compounds
What are some bad qualities of chlorine-based compounds? - Precise
Answer ✔✔corrosive to metals and strong odor
,What are some bad qualities of phenols? - Precise Answer ✔✔may
leave a film or residue on surfaces
What are some bad qualities of iodophors? - Precise Answer ✔✔can
discolor some surfaces yellow
What are some bad qualities of quaternary compounds? - Precise
Answer ✔✔not corrosive, but have a lower kill spectrum
What would be some good qualities of disinfectants? - Precise Answer
✔✔rapid, broad spectrum antimicrobial, bacteriocidal, fungicidal,
tuberculocidal, virucidal, odorless, easy to use, fast acting, economical,
residual effect which it continues to work after it dries, not toxic to touch
or inhalation, EPA registered, and disinfects and cleans.
Is a spatter invisible to the eye? - Precise Answer ✔✔NO, can see it
when airborne
Is aerosol invisible to the eye? - Precise Answer ✔✔yes, remain in the
air for a while
What sheet provides an employee with information regarding the
hazards of chemicals utilized in the office and how to protect themself? -
Precise Answer ✔✔MSDS (Material Safety Data Sheet)
, What disinfectant should not be used as a surface disinfectant in the
office and why? - Precise Answer ✔✔Glutaraldehydes, toxic effects of
fumes; also corrosive
What kind of disinfectants are used in the dental office? - Precise
Answer ✔✔Intermediate
What are some methods of sterilization? - Precise Answer ✔✔Chemical,
Dry, and Steam
During chemical sterilization, how long at what degree and pressure are
used? - Precise Answer ✔✔20 min @ 270 degree F @ 20-40 lbs psi
During Dry sterilization, how long at what degree are used? - Precise
Answer ✔✔60-120 min @ 320 degree F
During Steam sterilization, how long at what degree and pressure are
used? - Precise Answer ✔✔20-30 min @ 250 degree F @ 15-30lb psi
What method of sterilization involves the least temperature? - Precise
Answer ✔✔Steam at 250 degree F
What are some considerations when using the chemical method? -
Precise Answer ✔✔ventilation is necessary, may damage rubber and
plastic items
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