Dental Hygiene National Board exam with complete solutions.
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Course
Dental Hygiene
Institution
Dental Hygiene
What are some examples of bio-hazard waste?
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?
True
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Dental Hygiene National Board exam with
complete solutions
What are some examples of bio-hazard waste? - 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? - ANSWER- True
When should we change our mask? - ANSWER- When it becomes wet or soiled
with every patient. That includes your fluids as well.
What is the purpose of PPE? - ANSWER- Is to minimize the exposure to Aerosol,
Spatter, Direct transmission, and Indirect transmission (ASDI)
Do disinfectants kill spores? - ANSWER- NO
What are some types of disinfectants? - ANSWER- Chlorine-based compounds,
iodophors, phenols, quaternary compounds
What are some bad qualities of chlorine-based compounds? - ANSWER-
corrosive to metals and strong odor
What are some bad qualities of phenols? - ANSWER- may leave a film or residue
on surfaces
What are some bad qualities of iodophors? - ANSWER- can discolor some
surfaces yellow
What are some bad qualities of quaternary compounds? - ANSWER- not
corrosive, but have a lower kill spectrum
What would be some good qualities of disinfectants? - 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? - ANSWER- NO, can see it when airborne
Is aerosol invisible to the eye? - 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? - ANSWER- MSDS
(Material Safety Data Sheet)
What disinfectant should not be used as a surface disinfectant in the office and
why? - ANSWER- Glutaraldehydes, toxic effects of fumes; also corrosive
What kind of disinfectants are used in the dental office? - ANSWER- Intermediate
What are some methods of sterilization? - ANSWER- Chemical, Dry, and Steam
During chemical sterilization, how long at what degree and pressure are used? -
ANSWER- 20 min @ 270 degree F @ 20-40 lbs psi
During Dry sterilization, how long at what degree are used? - ANSWER- 60-120
min @ 320 degree F
During Steam sterilization, how long at what degree and pressure are used? -
ANSWER- 20-30 min @ 250 degree F @ 15-30lb psi
What method of sterilization involves the least temperature? - ANSWER- Steam at
250 degree F
What are some considerations when using the chemical method? - ANSWER-
ventilation is necessary, may damage rubber and plastic items
What are some considerations when using the dry method? - ANSWER-
recommended for metal instruments, avoid paper products, may damage, rubber
and plastic items, and not recommended for handpieces.
What are some considerations when using the steam method? - ANSWER-
corrodes non-stainless steel instruments, dulls instruments and burs, ok for
some plastics; cotton rolls and gauze, paper packages come out wet and tear.
, What is the only way to tell if the instruments are sterilized? - ANSWER- A weekly
spore test
Does indicator tape always guarantee sterility? - ANSWER- NO, only spore test
What spore test is used with chemical sterilization? - ANSWER- Geobacillus
(formerly Bacillus) stearothermophilus
What spore test is used with dry sterilization (static air)? - ANSWER- Bacillus
atrophaeus/ subtilis
What spore test is used with steam sterilization? - ANSWER- Geobacillus
(formerly Bacillus) Stearothermophilus
What 2 sterilization methods use the spore test Geobacillus (Bacillus)? -
ANSWER- Chemical and Steam
What is another name for spore testing? - ANSWER- Biological Indicators
What should the Dental Hygienist do if there are any questions regarding the
patients medical hx? - ANSWER- Always contact the patient's physician first
What is the systolic pressure? - ANSWER- ventricles of the heart contract
sending blood into circulation
What is the diastolic pressure? - ANSWER- ventricles of the heart relax to fill with
blood returned by circulation
What is tachycardia? - ANSWER- rapid pulse rate; over 100 beats per min.
What is bradycardia? - ANSWER- slow pulse rate; below 50 beats per min.
What is the normal HR for children (1-10yrs)? - ANSWER- 70-120 beats per min.
What is the normal HR for adults? - ANSWER- 60-100 beats per min.
What is the normal HR for infants? - ANSWER- 100-160 beats per min.
What is the normal blood pressure for adults? - ANSWER- > 120/80
What is stage 1 hypertension (mild) considered? - ANSWER- 140/90 - 159/99
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