Dental Material Quiz 1

These create a physical barrier to decay by sealing the surface

The FIRST step in sealant preparation

gradual change in shape when an object is under constant pressure

Torsion: twisting force

A liquid that is hydrophobic would exhibit a ____________________contact

NO dental material expands or contracts exactly like tooth structure

What classification is this?

This is an example of a class 3 restoration

Requirements of Dental materials

An example of an Indirect restorative material is composite

This is an example of micropores

"A" is compression

Physical properties is based on laws of physics

Hostile environment for materials include-

Contamination is the major cause of sealant failure. If contamination occurs you must repeat etching procedure.

HIGH contact angle = GOOD wetting

The FDA ensures safety of all medical devices ensures safety of all medical devices

We cannot have stress w/o strain

Mechanical properties is how well materials resist forces

High contact is hydrophobic

change in length or shape- deformation: stress

measure of change in volume in relation to change in temperature is ----

What class is this

"A" is tension

When dissimilar metals in the presence of saliva constitutes an electric shock

What hardness test is this?

LOW contact angle= GOODwetting

ability to flow is known as

Most decay occurs during 3rd year after eruption

This is an example of

This is the vickers hardness test

The higher the vapor pressure = vaporizes fast

37% phosphoric acid etch shpuld be applied for -----

What hardness test is this?

Thermal Expansion leads to