✨✨Chapter 7 Wilkins preclinical

1. Which standard precaution may be used to inactivate an infectious agent and break the chain of disease transmission?

a) Handwashing

b) Disinfection

c) Use of barriers

d) Handwashing and disinfection

D

2. Utility or heavy-duty gloves are used for which of the following procedures?

a) Examination of the patient's extraoral areas

b) Examination of the intraoral cavity (mouth)

c) Cleanup and setup of the dental operatory only

d) Processing of contaminated dental instruments only

e) Cleanup and setup of the dental operatory and processing of contaminated dental instruments

E

3. Which of the following is true of an autoclave?

a) It is a chemical vapor sterilizer.

b) It is sterilization achieved by steam under pressure.

c) It is a dry heat sterilizer.

d) It is a washer/thermal disinfector.

B

4. Which of the following is an advantage of sterilization by steam under pressure? a) It will not corrode carbon steel instruments.

b) It is economical.

c) It is suitable for oils or powders.

d) It is effective for small metal instruments enclosed in special containers.

B

5. Of the following methods of sterilization, which one requires the longest time to complete?

a) Chemical vapor

b) Dry heat

c) Gravity displacement autoclave

d) Prevacuum autoclave

B

6. Which of the following statements is true?

a) Autoclaving at a temperature of 160°F may destroy the sharp edges of cutting instruments.

b) Indicator tape does not serve to test for true sterilization.

c) Instruments will be sterilized in an ultrasonic machine.

d) Oils, waxes, and powders must be sterilized in a moist heat machine.

B

7. A) Organic debris left on an instrument may prevent sterilization from occurring. B) In a dry heat sterilizer timing begins when instruments are placed in the sterilizer and it is turned on.

a) Statement A is true and statement B is false.

b) Statement A is false and statement B is true.

c) Both statements are true.

d) Both statements are false.

A

8. Which of the following should you do when cleaning and disinfecting environmental surfaces in the operatory? a) Use small sponges.

b) Spray and leave the surfaces wet when finished.

c) Do not scrub vigorously.

d) Use only one sponge at a time,

B

9. Which of the following is the least preferred method of precleaning instruments before sterilization?

a) Manual cleaning

b) Washer/thermal disinfector

c) Ultrasonic processing

d) All precleaning methods are equally preferable.

A

10. A) High-level disinfectants inactivate spores and all forms of bacteria, fungi, and viruses. B) Intermediate-level disinfectants inactivate all forms of microorganisms but do not destroy spores.

a) Statement A is true and statement B is false,

b) Statement A is false and statement B is true.

c) Both statements are true.

d) Both statements are false.

C

11. Which of the following would not be correct procedure after an exposure incident?

a) Immediately wash the wound with soap and water.

b) Squeeze the wound to express as much blood as possible.

c) Report the exposure to the designated official and complete an incident report as required.

d) Follow the required predetermined, posted procedures of the clinic, institution, or other workplace.

B

12. Criteria for the selection of an ideal disinfectant include all of the following except one. Which one is the exception? a) Bactericidal

b) EPA approval

c) Unique odor

d) Virucidal

C

13. Which of the following is the best recommendation for preparation of disinfectants?

a) Follow the manufacturer's directions.

b) Each clinic day prepare new solution with warm tap water.

c) At the beginning of each week dispose of the previous week's solution and prepare a new solution.

d) Combine two solutions to active disinfectant solution and keep it for 30 days.

e) Take previous solution and add new solution to it to make up enough for the day.

A

14. Which of the following are characteristics of an ideal disinfectant?

a) Economical and broad-spectrum antimicrobial

b) Nonstaining and unique odor

c) Nonirritating to human tissue and no residual effèct on'treated surfaces

d) Slow duration and toxic

e) May corrode metallic surfaces and causes disintegration of plastics and fabric

A

15. Which of the following is the proper order for processing contaminated instruments?

a) Package for sterilizing, place cassette in ultrasonic cleaner, rinse and dry instruments, hand scrub as necessary

b) Place cassette in ultrasonic cleaner, hand scrub as necessary, rinse and dry instruments, package for sterilizing

c) Rinse and dry instruments, package for sterilizing, hand scrub as necessary, place cassette in ultrasonic cleaner,

d) Hand scrub as necessary, place cassette in ultrasonic cleaner, package for sterilizing, rinse and dry instruments

B

16. A) Preprocedural rinsing and other oral hygiene measures help to prevent the spread of communicable diseases. B) Preprocedural rinsing and other oral hygiene measures decrease the number of microorganisms in the oral cavity.

a) Statement A is true and statement B is false.

b) Statement A is false and statement B is true.

c) Both statements are true.

d) Both statements are false.

C

17. In the classification of inanimate objects, which of the following is considered semi-critical?

a) Light handles

b) Countertops

c) Explorers

d) Mirror

D

18. A) Keep a written record of dates when processing tests and biologic monitor tests are performed for each sterilizer. B) Perform tests made monthly on the same day to simplify remembering. a) Statement A is true and statement B is false.

b) Statement A is false and statement B is true.

c) Both statements are true.

d) Both statements are false.

A

19. Which of the following statements is true?

a) Smoking and eating are to be limited in treatment areas.

b) Select toy animals that are soft and cuddly in the treatment areas for child comfort.

c) Provide handy wipes in treatment areas.

d) A biofilm of microorganisms cam form on the inside of the waterline tubing during overnight standing.

D

20. Which of the following is a disadvantage of a chemical vapor sterilizer?

a) Rust-free operation for carbon steel instruments

b) Need for adequate ventilation

c) A relatively short total cycle

d) Ease of operation

B

21. When using dry heat sterilization, a temperature of _____is maintained for 2 hours.

a) 120°C

b) 140°C

c) 300°F

d) 320°F

D

22. True or False? Blood, suctioned fluids, or other liquid waste may be carefully poured into a closed container and placed into the biohazard trash in compliance with applicable local regulations.

False