DANB DANB Hand Hygiene & Surface Disinfection 2

Question 1

What is the two-step process for cleaning and disinfecting dental surface barriers when they are not used?

Accepted Answer

Clean with detergent, then disinfect with EPA-registered product

Answer

Wipe once with disinfectant

Answer

Apply bleach solution only

Answer

Use UV light sterilization

Question 2

Surface barriers (plastic wrap/covers) used in dentistry should be changed:

Accepted Answer

Between each patient

Answer

Once daily

Answer

Once per week

Answer

Only when visibly soiled

Question 3

Which alcohol concentration is most effective as a hand antiseptic?

Accepted Answer

60–95%

Answer

30–40%

Answer

50–60%

Answer

100%

Question 4

When should surgical hand antisepsis be performed in a dental setting?

Accepted Answer

Before surgical procedures only

Answer

Before every routine procedure

Answer

After every procedure

Answer

Only when wearing sterile gloves

Question 5

What product should NOT be used for hand hygiene in a dental office?

Accepted Answer

Alcohol-based hand rub

Answer

Chlorhexidine scrub

Answer

Plain soap and water

Answer

Iodine-based scrub

Question 6

How long should an alcohol-based hand rub be applied to achieve effective hand antisepsis?

Accepted Answer

Until it feels dry (approximately 15–30 seconds)

Answer

5 seconds

Answer

1 minute

Answer

2 minutes