Classification of Impressions
Irreversible Hydrocolloid
Reversible Hydrocolloid
Elastomeric Materials
Occlusal Registration
100

The three classifications of impressions taken in dental procedures consist of

What is preliminary, final, and occlusal

100
What is the irreversibly hydrocolloid most widely used for preliminary impressions
What is alginate
100

A term used to describe the absorption of water

What is imbibition 

100
"Having rubber like qualities"
What is elastomeric
100
Most often referred to as the bite registration
What is occlusal registration
200

Impressions are a _ reproduction of those structures, and the model created from the impression is the positive reproduction of the structures.

What is negative

200

What 2 phases does hydrocolloid materials have

What is sol (solution) and gel (solid)

200

Reversible material is made up of approximately 85 percent water and 13 percent__?

What is agar

200
Elastomeric materials are self-curing and supplied as a base and a ___
What is catalyst
200
The paste has no odor or taste for the patient
What is polysiloxane bite registration paste
300

3 types of impression trays

What are quadrant, section, and full arch

300
A slight change in the surroundings can distort the impression and can cause
What is dimensional change
300

An organic substance derived from seaweed

What is agar

300

The ability to flow into and around the details of the prepared tooth, referred to as syringe type

What is Light-bodied material/syringe-type or wash-type

300
Material that is odor free, non-staining, and relatively easy to mix
What is condensation silicone
400

Stock trays should extend approximately ___ beyond the third molar, retromolar, or tuberosity area of the arch.

What is 2 -3 mm

400

Mixing temperature for the water

What is room temperature

400
Reversible hydrocolloid material is placed in
What is plastic tubes
400

Referred to as tray type: used to fill the tray for a more accurate impression

What is regular/heavy bodied

400
Has little to no resistance to bite closure and is a fast setting material
What is zinc oxide- eugenol (ZOE)
500
What is used if the patient has an unusual high palate when trying to get an impression
What is utility wax
500
What is the water-to-powder ration on an adult mandibular impression
What is 2:2
500

Reversible hydrocolloid changes from what states

what is sol to gel to sol

500
Have high dimensional stability and low tear resistance, making them easy to handle when making a final impression
What is Polysiloxane
500
The base of silicone impression material
What is polydimethyl siloxane
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