Hydrocolloid Impression Materials

When preparing to take an alginate impression, it is preferable to use _____________

• warm water

• cool water

• very hot water

• ice cold water

The alginate powder to amount of water in the vile should be at a ___________ ratio.

• 1:1

• 1:2

• 1:3

• 1:4

Tags

CCSS.7.RP.A.1

CCSS.7.RP.A.2

After the alginate impression has been taken on a patient, you have __________ minutes before it starts to distort.

• 60

• 5

• 12

• 20

Tags

CCSS.3.MD.A.1

After taking an alginate impression on a patient, the first thing you need to do is wrap your alginate in a ...

• plastic

• fluffy kitchen towel

• warm damp towel

• cool damp towel

Wrapping your alginate impression in a wet towel _____________.

• slows down the distortion process

• keeps the alginate impression from fading colors

• does nothing. There is no purpose for this.

• keeps debris from contaminating the impression

The mixing process used when mixing alginate powder and water is called...

• mixation

• spatulation

• whipping

• granulation

When placing the tray with alginate material in the patient's mouth, you must ...

• press two fingers bilaterally on the anterior teeth

• press two fingers bilaterally on the posterior teeth

• press one finger on the occlusals of the anterior teeth

• use one hand to hold tray in the mouth

How much time do you typically have before the alginate material starts to harden?

• 30 seconds

• 3 minutes

• 2 minutes

• 60 seconds

Tags

CCSS.3.MD.A.1

What is the term used to identify when impression material is hardening?

• cure

• set

• cooked

• settled

Typically, how many scoops of alginate powder are needed per impression tray?

• 1 - 2 scoops

• 2-4 scoops

• 4-5 scoops

• No more than 3 scoops

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3