DANB DANB Dental Unit & Environmental Infection Control 3

Question 1

Which air purification method is recommended by the CDC for dental operatories to reduce airborne contaminants?

Accepted Answer

High-efficiency particulate air (HEPA) filtration and proper ventilation

Answer

Standard window air conditioners

Answer

Burning candles or incense

Answer

Ozone generators

Question 2

How should dental radiographic equipment (X-ray unit heads, position-indicating devices) be managed for infection control?

Accepted Answer

Use surface barriers or clean and disinfect with EPA-registered product between patients

Answer

Wipe with dry gauze between patients

Answer

Disinfect only once daily

Answer

No special precautions are needed for X-ray equipment

Question 3

What should be done with single-use items such as saliva ejectors and air-water syringe tips after each patient?

Accepted Answer

Discard as clinical or regulated waste per office protocol

Answer

Sterilize and reuse if undamaged

Answer

Discard as regular trash

Answer

Rinse, dry, and store for next patient

Question 4

What is the correct infection control approach for dental handpieces (high-speed, low-speed)?

Accepted Answer

Heat sterilize (autoclave) between patients

Answer

Wipe the exterior with disinfectant between patients

Answer

Use surface barriers only

Answer

Soak in chemical disinfectant for 20 minutes

Question 5

Environmental surfaces in a dental office are divided into which two categories for infection control purposes?

Accepted Answer

Clinical contact surfaces and housekeeping surfaces

Answer

Sterile and non-sterile surfaces

Answer

Hard and soft surfaces

Answer

Wet and dry surfaces

Question 6

Which level of disinfection is appropriate for clinical contact surfaces in a dental operatory?

Accepted Answer

Intermediate-level disinfection (EPA-registered, tuberculocidal)

Answer

Low-level disinfection (e.g., quaternary ammonium only)

Answer

Sterilization

Answer

High-level disinfection with glutaraldehyde