DANB DANB Hand Hygiene & Surface Disinfection 3

Question 1

What is the purpose of using a 1:10 dilution of sodium hypochlorite (bleach) as a surface disinfectant?

Accepted Answer

It provides broad-spectrum antimicrobial activity including HIV and HBV

Answer

It is cheaper than other disinfectants

Answer

It is safer for skin contact

Answer

It does not damage dental equipment

Question 2

Which area of the hands is most commonly missed during handwashing?

Accepted Answer

Fingernails and fingertips

Answer

Palm center

Answer

Back of the hand

Answer

Wrist

Question 3

How often should dental personnel perform hand hygiene during patient care?

Accepted Answer

Before and after each procedure, after touching contaminated surfaces

Answer

Only before and after the appointment

Answer

Once per hour

Answer

Only when gloves are changed

Question 4

Which type of gloves should be used when cleaning and disinfecting operatory surfaces?

Accepted Answer

Utility/heavy-duty gloves

Answer

Examination gloves

Answer

Sterile surgical gloves

Answer

No gloves needed

Question 5

What is the recommended contact time for most EPA-registered surface disinfectants used in dental offices?

Accepted Answer

Follow manufacturer's label instructions

Answer

Immediate wipe-off

Answer

30 seconds

Answer

Minimum 10 minutes

Question 6

Artificial nails or nail extenders worn by dental healthcare workers are a concern because:

Accepted Answer

They harbor more pathogens and complicate handwashing effectiveness

Answer

They are too expensive

Answer

They damage gloves too quickly

Answer

They are unprofessional in appearance