FREE RDA Restorative and Impression Materials Questions and Answers

Question 1

When mixing alginate impression material, using water that is warmer than the recommended temperature will:

Accepted Answer

Cause it to set faster

Answer

Cause it to set slower

Answer

Prevent it from setting at all

Answer

Make the final impression stronger

Question 2

The mechanical mixing of dental amalgam alloy powder and mercury is known as:

Accepted Answer

Trituration

Answer

Amalgamation

Answer

Condensation

Answer

Spatulation

Question 3

Zinc phosphate cement is mixed on a cool, dry glass slab primarily to:

Accepted Answer

Dissipate the exothermic heat

Answer

Incorporate more powder into the liquid

Answer

Accelerate the setting time

Answer

Prevent moisture contamination

Question 4

The process by which a light-cured composite resin material is changed from a pliable state to a hardened restoration is known as:

Accepted Answer

Polymerization

Answer

Galvanism

Answer

Trituration

Answer

Amalgamation

Question 5

Which type of elastomeric impression material is known for having the best dimensional stability over time, allowing a delay before pouring the model?

Accepted Answer

Polyvinyl siloxane (PVS)

Answer

Polysulfide

Answer

Polyether

Answer

Condensation silicone

Question 6

A primary advantage of using glass ionomer cement as a restorative material is its ability to:

Accepted Answer

Release fluoride

Answer

Achieve a very high polish

Answer

Withstand high occlusal forces in posterior teeth

Answer

Be used without a bonding agent