Chapter 24 Recall Q's

What methods are available to test the quality of dental unit matter?

1. Use a commercial testing service 2. Use an in-office kit

Where is biofilm found?

All places where moisture and a suitable surface exist. (Dental water lines)

How often should microfilters be changed?

Changed according to the manufacturer's recommendations

Will flushing DUWLs remove biofilm?

It will not remove biofilm. Reduces microbial count in water

What bacteria cause the disease legionellosis?

Legionella species

Are waterborne diseases limited to dentistry?

No, they go to hospitals, nursing homes, schools, restaurants, community water supplies, swimming pools and spas

Is it possible to eliminate biofilm completely?

No. It can be reduced but not eliminated

Is it appropriate to heat the water in dental units?

No. It will be more comfortable for the patient, but enhances the growth of microorganisms

What type of water must be used as an irrigant for surgery involving bone?

Sterile water from special sterile water delivery systems or hand irrigation with sterile water in a sterile disposable syringe

When should the HVE be used to minimize aerosol?

When the operator is using a high speed handpiece, ultrasonic scaler, and air-water syringe

Will the use of a rubber dam totally eliminate exposure to microorganisms?

Yes, and also reduces direct contact