Chapter 24 Dental Review

Factors that DON'T promote bacterial contamination

• The use of water heaters can enhance the growth of microorganisms

• Pouring bleach down the waterways

• water accumulates and becomes stagnant

• Heating water near body temperature

Biofilm is found where moisture and a suitable surface exist

• True

• False

Dental unit waterlines contain more bacteria than faucets BECAUSE

• They don't contain more bacteria

• Saliva may be retracted back into waterlines

• The faucets come from a different water source

Where do outbreaks of water borne diseases occur

• Nursing Homes

• Schools

• Hospitals

• All water sources

How many CFU is in public water supply before it comes in DUWLS

• Less than 500

• 1000

• 5000

• More than 5000