DANB DANB Chemical Disinfectants & Sterilants

Question 1

Which organization is responsible for registering disinfectants used in dental settings in the United States?

Accepted Answer

EPA

Answer

CDC

Answer

OSHA

Answer

FDA

Question 2

What are the three levels of disinfection recognized in dental infection control?

Accepted Answer

Low, intermediate, and high

Answer

Minimal, moderate, and maximum

Answer

Basic, standard, and advanced

Answer

Primary, secondary, and tertiary

Question 3

Which level of disinfection is required to kill all microorganisms including Mycobacterium tuberculosis but NOT necessarily high numbers of bacterial spores?

Accepted Answer

Intermediate-level

Answer

Low-level

Answer

High-level

Answer

Chemical sterilization

Question 4

Glutaraldehyde used as a liquid chemical sterilant typically requires a minimum contact time of how long?

Accepted Answer

6–10 hours

Answer

10 minutes

Answer

30 minutes

Answer

24 hours

Question 5

Which chemical agent is classified as a high-level disinfectant and chemical sterilant in dentistry?

Accepted Answer

2% glutaraldehyde

Answer

70% isopropyl alcohol

Answer

Quaternary ammonium compound

Answer

Phenolic compound

Question 6

Quaternary ammonium compounds (quats) are classified as what level of disinfectant?

Accepted Answer

Low-level

Answer

High-level

Answer

Intermediate-level

Answer

Chemical sterilant

Question 7

Which level of disinfectant is most appropriate for clinical contact surfaces in dental operatories?

Accepted Answer

Intermediate-level or higher

Answer

Low-level only

Answer

Chemical sterilant only

Answer

High-level only