DANB Dental Instrument Sterilization

Question 1

What is the proper sequence for processing contaminated dental instruments?

Accepted Answer

Transport, clean, rinse, dry, package, sterilize, store

Answer

Sterilize, clean, package, store

Answer

Store, clean, sterilize, package

Answer

Package, sterilize, clean, store

Question 2

What temperature and time combination is standard for gravity displacement steam sterilization of wrapped instruments?

Accepted Answer

250°F (121°C) for 30 minutes

Answer

212°F (100°C) for 15 minutes

Answer

320°F (160°C) for 60 minutes

Answer

180°F (82°C) for 45 minutes

Question 3

Why is ultrasonic cleaning preferred over manual scrubbing for contaminated instruments?

Accepted Answer

It reduces the risk of sharps injuries and provides more thorough cleaning of complex instruments

Answer

It is faster than any other cleaning method

Answer

It sterilizes instruments during the cleaning process

Answer

It uses less water than manual cleaning

Question 4

What is the purpose of chemical indicators in sterilization pouches?

Accepted Answer

To show that the pouch has been exposed to sterilization conditions, not to confirm sterility

Answer

To guarantee that all microorganisms have been killed

Answer

To indicate the expiration date of the instruments

Answer

To identify the type of instruments inside the pouch

Question 5

How should sterilized instrument packages be stored?

Accepted Answer

In closed, clean cabinets away from moisture, dust, and direct sunlight

Answer

In open bins on countertops for easy access

Answer

In the same area as contaminated instruments

Answer

Stacked directly on the floor of the sterilization room

Question 6

What is the difference between critical, semi-critical, and non-critical dental instruments?

Accepted Answer

Critical penetrate tissue (forceps); semi-critical contact mucosa (mirrors); non-critical contact skin only (X-ray heads)

Answer

All dental instruments are classified as critical

Answer

The classification is based on instrument cost

Answer

Critical items are used daily; non-critical items are used rarely