DANB Dental Instrument Sterilization 3

Question 1

How often does the CDC recommend performing biological monitoring (spore testing) of dental office sterilizers?

Accepted Answer

At least weekly

Answer

The CDC recommends biological monitoring at least weekly. A positive result means the sterilizer must be removed from service.

Question 2

What is the primary purpose of using an enzyme-based cleaner during the pre-cleaning phase of instrument reprocessing?

Accepted Answer

To break down organic material such as blood and protein

Answer

Enzyme-based cleaners contain proteases and lipases that actively break down organic matter on instruments, facilitating thorough cleaning before sterilization.

Question 3

What is the correct procedure when a biological indicator test comes back positive?

Accepted Answer

Remove the sterilizer from service and investigate the cause

Answer

A positive BI means sterilization failure. The unit must be removed from service, the cause investigated, and items processed since the last negative test recalled.

Question 4

Which instrument packaging material is NOT acceptable for use in a steam autoclave?

Accepted Answer

Nylon/plastic pouches without paper backing

Answer

Closed nylon or plastic pouches without a paper or Tyvek backing do not allow steam penetration, which is essential for steam sterilization.

Question 5

What is the maximum recommended storage time for sterilized packs stored under optimal conditions per event-related shelf life principles?

Accepted Answer

Indefinite if packaging integrity is maintained

Answer

Under event-related shelf life principles, sterilized packs remain sterile indefinitely as long as packaging remains intact, dry, and undamaged.

DANB Infection Control Exam Practice Test

DANB Infection Control Exam Practice Test

DANB Dental Instrument Sterilization 3