Dental Materials Unit 1

Which are properties a dental material must have to survive in the oral environment?

General properties of dental materials: Describes the effects the material has on living tissue

The typical temperature of the oral cavity is 38 degrees celcius

Loss of teeth has no impact on the bite force.

Deformation of change that occurs is...

Materials reaction or response to force is...

Compression can cause pressure, rupture, and change in materials.

Dental materials must be approved by the CDA before they can be used in the mouth

Which has a Knoop hardness of 400-500

Which has a Knoop hardness of 70

You will find a CDA seal of recognition on products that are approved and safe.

Ductile materials undergo forces of tensile strength without failing.

The point at which a material is destroyed through the action of two portions sliding over each other is...

Low viscosity flows well and high viscosity does not.

Ideally, how long until you pour stone into your alginate impression?

Imbibition is when the alginate impression is submerged in water and it absorbs the water.

Select which are criteria for new dental materials:

Wetability is the ability of a liquid to spread over a solid

General properties of dental materials: Based on laws of physics.

Select which are criteria for new dental materials:

Select the following in which adhesion can be achieved through.

Abrasion resistance should be considered due to possibility of wear on restorations or natural tooth anatomy

General properties of dental materials: Describes a materials ability to resist forces

There is a CE symbol for ISO which shows international safety standards are associated with said product.

Which has a Knoop hardness of 20

General properties of dental materials: Describes the setting reaction, decay or degradation of materials

What is the average biting and chewing force of the posterior area of the mouth?

Synerisis is an agglomeration that forces water from the alginate gel onto the surface of the set impression material

The best materials to use in dentistry are good thermal conductors

Percolation results in which?

Which has a Knoop hardness of 350

What can cause electrochemical corrosion?

Any push or pull upon matter is...