Materials
Composition
Chemicals
100

What is the ability of a material to resist fracture?

Toughness

100

What coincides with the end of working time and is the time at which the material can no longer be manipulated in the mouth?

Initial Set Time

100

What is the ability of a material to withstand fracture at a thin edge, such as at margins of a restoration?

Edge Strength

200

What would an amalgam restoration be considered?

Direct Restorative Material

200

Why might increasing the operatory temperature or using warm mixing tools reduce the available period for manipulating a dental material before it sets?

Working Time

200

Which metal restoration is an example of ductility?

Gold

300

What responses easily to compressive stress?

Malleability

300

What is expected to only last days or weeks?

Temporary Restoration

300
Some viscous liquids will flow more readily under stress. Fluoride would be considered this.

Thixotropy

400

What is the ability of a liquid material to resist flow?

Viscosity

400

When the material is mixed to completion, it would be considered? 

Final Set Time

400

What is the material set through a timed chemical reaction and is combined with a catalyst and a base? 

Chemical Set Materials 

500

What is a restoration that should last forever?

Permanent Restorations

500

What can withstand damage due to pressure or wear?

Durability

500

When a dental impression made of alginate is removed from a patient’s mouth, it briefly distorts as it passes over undercuts, but then returns exactly to its original shape without permanent change. This reversible process is known as what?

Elastic Deformation