Ch. 19 Dental Unit Waterlines

Question 1

normal drinking water

Answer 1

500 CFUs per milliliter

Question 2

dental treatment water

Answer 2

challenged to 200 CFUs per mL

Question 3

biofilm

Answer 3

community of bacterial cells and other microbes that adhere to surfaces and form a protective matrix from their cell walls called a slime layer

Question 4

laminar flow

Answer 4

the water flows fastest in the middle of the tube and slows toward the edge