Infection Control Review.?

1. _______ is the process of removing some disease-producing
microorganisms and rendering the object somewhat safe for
handling.
A. Asepsis. C. Sterilization.
B. Cleaning. D. Decontamination.

2. The autoclave sterilizer operates at _______ degrees F and
_______ pounds per square inch of pressure for a time
period of _______ minutes to achieve sterilization.
A. 273, 30, 3–5 C. 250, 15, 15–20
B. 260, 20, 15 20 D. 320, 20, 60–90

3. Which of the following statements on the use of personal
protective equipment by the dental assistant is correct?
A. Latex or vinyl gloves must be sterile for all
dental treatments.
B. Protective clothing may be worn home if it isn’t
visibly soiled.
C. A new mask should be worn by the dental assistant
for each patient who’s being treated.
D. Safety glasses should be open at the sides to
ensure visibility.

4. Utility gloves made of _______ are always used when cleaning the operatory or
processing instruments.
A. latex C. vinyl
B. canvas D. nitrile rubber

5. Which of the following statements about the flash autoclave is incorrect?
A. Sterilization results are consistently good.
B. The flash autoclave has a reserve of preheated steam that can start sterilizing as
soon as the door is closed.
C. Most dental instruments and other small items can be sterilized in the flash
autoclave.
D. Packaged instruments are sterilized within five minutes in a flash autoclave.

6. A (An) _______ is a product or agent used to kill microorganisms without necessarily
sterilizing the object, item, or material.
A. protective barrier C. antiseptic
B. disinfectant D. cleaner

7. Biological indicators are used to
A. check the effectiveness of solutions used for the sterilization of instruments.
B. verify that sterilization has taken place inside an autoclave, dry-heat sterilizer, or
chemiclave sterilizer.
C. keep the dental assistant safe from the transmission of disease.
D. keep the contaminated instruments clean.

8. Instruments are packaged or wrapped to
A. convince the patient that the instrument has been sterilized.
B. prolong the amount of time an instrument can be considered usable and preserve
sterilization.
C. prolong the useful life of the instruments and the shine in the metal.
D. cut down on the time needed for the sterilization process.

9. _______ allows pathogens to spread by contact of droplets containing microorganisms
generated from an infected person with conjunctival (eye), nasal, or oral mucosa.
A. Droplet infection C. Direct contact
B. Inhalation D. Indirect contact

10. When using disinfectant products, the dental assistant does not need to know
A. guidelines for the safe handling and use of these products.
B. the dental history of the patient on whom the contaminated instruments were
used.
C. the EPA and ADA acceptance labeling of the product.
D. which product to use for what purpose.

11. The receiving area of the sterilization room is the area where instruments are placed
until they can be processed. Where should the dental assistant place instruments until
he or she can begin the recirculation process?
A. In the autoclave or inside the ultrasonic cleaner
B. In the sink or inside the ultrasonic cleaner
C. On a countertop or in the sink
D. In a closed cabinet or in a holding container

12. The best method of removing debris from dirty instruments is by the use of
A. the ultrasonic cleaner. C. warm water.
B. a long-handled brush and hand scrubbing. D. cold water.

13. An example of a high-level disinfectant is
A. sodium hypochlorite. C. glutaraldehyde.
B. chlorine dioxide. D. phenol compound.

14. The process of cleaning the operatory after a patient treatment involves a number of
steps. The first step in this process begins with the dental assistant
A. flushing the dental handpiece lines.
B. removing contaminated dental items to the sterilization area.
C. disposing of nonreusable items.
D. disinfecting all hard surfaces, items, and equipment inside the operatory that can’t
be sterilized inside the autoclave.

15. Disinfection of countertops, metal, and hard plastics is not best accomplished by the
use of _______ because it’s very corrosive to hard surfaces.
A. alcohol C. a phenol compound
B. a glutaraldehyde solution D. an ultrasonic cleaner

16. In the sterilization area, instruments should move from a/an _______ to a _______
area.
A. contaminated, clean C. ultrasonic, sterilization
B. cabinet, sink D. contaminated, storage

17. Before packaging and wrapping instruments, the dental assistant should dry off the
instruments to avoid
A. incomplete sterilization of the instruments.
B. corrosion, rust buildup, or dulling of the instruments.
C. putting them away wet.
D. the possibility of stains forming.

18. Instrument trays should be _______ before they’re married up with sterilized
instrument packs.
A. sterilized C. cleaned
B. disinfected D. sealed

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