Chapter 7 Wilkins preclinical

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

Handwashing and disinfection

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

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

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

It is sterilization achieved by steam under pressure

4. Which of the following is an advantage of sterilization by steam under pressure?

It is economical

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

Dry heat

6. Which of the following statements is true?

Indicator tape does not serve to test for true sterilization

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.

Statement A is true and statement B is false

8. Which of the following should you do when cleaning and disinfecting environmental surfaces in the operatory?

Spray and leave the surfaces wet when finished

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

Manual cleaning

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.

Both statements are true.

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

Squeeze the wound to express as much blood as possible

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

Unique odor

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

Follow the manufacturer's directions

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

Economical and broad-spectrum antimicrobial

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

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

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.

Both statements are true.

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

Mirror

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.

Statement A is true and statement B is false.

19. Which of the following statements is true?

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

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

Need for adequate ventilation

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

320°F

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