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What is abrasion resistance?
The wear resistance of dental restorations of food and opposing teeth.
Define bending.
A combination of several types of stresses.
What are biologic properties?
The effects of the material on living tissue.
What are chemical properties?
They describe setting reactions and degradation of materials.
What is the coefficient of thermal expansion?
A measure of the change in volume or length in relation to the change in temperature.
Cool materials contract, heated materials expand.
Define color.
Hue - fundamental color: red, green, blue
Chroma - strength or saturation (pink vs red)
Value - light or darkness of a color (shades of gray)
What is compression?
A pushing or crushing stress (such as condensing amalgam).
Define creep.
A small change in shape when an object is under continuous compression
What is density?
The mass of a material in a given volume.
A common unit is gm/cm3
What is elasticity?
Stretching of atomic bonds
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