RDA Instrument Processing, Sterilization, and Monitoring 5

Question 1

A sterilization log shows a load failed a biological indicator test. What is the FIRST action the dental team should take?

Accepted Answer

Immediately recall all items from that load and remove the sterilizer from service

Answer

A failed biological indicator requires immediate removal of the sterilizer from service and recall of all items processed since the last passed test.

Question 2

Which of the following is an example of a critical dental instrument requiring sterilization before each use?

Accepted Answer

Surgical extraction forceps that penetrate soft tissue

Answer

Critical instruments penetrate soft tissue or bone and must be sterilized between each patient use to prevent infection transmission.

Question 3

What is the function of a washer-disinfector in the instrument reprocessing workflow?

Accepted Answer

It mechanically cleans and thermally disinfects instruments to reduce bioburden before sterilization

Answer

A washer-disinfector uses heat and detergent to mechanically clean and thermally disinfect instruments, reducing bioburden as a precursor to sterilization.

Question 4

Dry heat sterilization at 320°F (160°C) typically requires how long for a full cycle?

Accepted Answer

1–2 hours

Answer

Dry heat sterilization requires longer exposure times than steam—typically 1 to 2 hours at 320°F (160°C)—because dry heat is less efficient at killing microorganisms than moist heat.

Question 5

Which packaging material is appropriate for use with unsaturated chemical vapor (Chemiclave) sterilization?

Accepted Answer

Paper/plastic peel pouches designed for chemical vapor

Answer

Paper/plastic peel pouches that allow chemical vapor penetration are the appropriate packaging for unsaturated chemical vapor sterilization.

(RDA) Registered Dental Assistant Practice Test

(RDA) Registered Dental Assistant Practice Test

RDA Instrument Processing, Sterilization, and Monitoring 5