RDA Infection Control and Barrier Techniques 4

Question 1

Which organization publishes the 'Guidelines for Infection Control in Dental Health-Care Settings' that dental practices in the US must follow?

Accepted Answer

CDC

Answer

The CDC publishes the Guidelines for Infection Control in Dental Health-Care Settings, which serve as the primary infection control standard for dental practices.

Question 2

When using a saliva ejector, which practice should be avoided to prevent backflow contamination?

Accepted Answer

Allowing the patient to close their lips around the tip

Answer

Patients should not close their lips around the saliva ejector tip because this creates negative pressure that can draw previously suctioned fluids back into the patient's mouth.

Question 3

What does the term 'critical instrument' refer to in the Spaulding classification system?

Accepted Answer

Instruments that penetrate soft tissue or bone

Answer

Critical instruments are those that penetrate soft tissue or bone and carry the highest risk of infection, requiring sterilization before each use.

Question 4

Which personal protective equipment (PPE) must be changed between patients regardless of visible soiling?

Accepted Answer

Gloves

Answer

Gloves must be changed between each patient because they are single-use items and cannot be adequately decontaminated for reuse.

Question 5

How long should instruments be immersed in a chemical sterilant (cold sterilization) to achieve sterilization rather than just high-level disinfection?

Accepted Answer

6–10 hours

Answer

Achieving sterilization with chemical sterilants typically requires 6–10 hours of immersion, whereas shorter contact times achieve only high-level disinfection.

(RDA) Registered Dental Assistant Practice Test

(RDA) Registered Dental Assistant Practice Test

RDA Infection Control and Barrier Techniques 4