Dental materials review

What is the definition of corrosion

• Chemical reaction plus a light reaction

• A materials electrical conductivity

• A liquids ability to wet a surface

• Metal changes to metal oxide

What is the description of viscosity?

• Rate of heat flow thru

• The ability of a material to flow

• Parts slide by each other

• Chemical reaction plus a light reaction

Which material is more viscous?

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If I am decreasing the setting time what does the material do?

• Sets quicker

• Takes longer to set

What is synerisis?

• An impression dries out because its been left in open air.

• An impression swells because it has been left in water too long.

• The liquid spreads out over a surface.

• The material stays in the spot you placed it.

Which answer demonstrates a material that is too hard in the mouth.

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We want a restorative material that is soluble in the mouth.

• True

• False

Like the bridge in this picture, dental materials can change in volume in relation to the change in temp. What is this called?

• Co-efficient of thermal expansion

• Galvanism

• Density

• Water sorption

Metal materials can appear radiopaque on a radiograph. Which radiograph shows a radiopaque material?

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Some materials can harden or cure. What is it called when you use light to cure a material?

• Chemical cure

• Light cure

• Dual Cure