Dental Materials

Front 1

___________is the removing of material by a shearing off process.

Back 1

Cutting

Front 2

List four reasons why teeth and restorations are polished

Back 2

reduce adhesions-removal plaque/calculus

Front 3

_________wearing away of surface, also referred to as grinding

Back 3

Abrasion

Front 4

________is the abrasion of a surfaceto reduce the size of scratches until the surface appears shiny

Back 4

Polishing

Front 5

________is widely used in dentistry on disks and strips and is also impregnated into rubber wheels and points. It is white stones used to adjust enamel or finish metal alloys and ceramic materials

Back 5

Aluminum Oxide

Front 6

__________is the process of producing the final shape and contour of a restoration

Back 6

Finishing

Front 7

________is a silica-like volcanic glass used to polish enamel, gold foil and amalgam and to finish acrylic denture bases in lab. It is abrasive agent in Lava Soap

Back 7

Pumice

Front 8

________is also known as Corundum, is a natural form of aluminum oxide that looks like grayish black sand

Back 8

Emery

Front 9

________burs are harder than______burs, they last longer and are more expensive

Back 9

Tungsten Carbide
Carbon steel

Front 10

________is the mineral form of calcite also known as whiting or calcium carbonate that is used to polish teeth, gold amalgam, plastic materials

Back 10

chalk

Front 11

When a polishing agent is mixed with a liquid to form a thick material, it is known as a_______

Back 11

paste

Front 12

________is a silica-like material similar to quatz used as an oral abrasive

Back 12

silex

Front 13

Irregularly shaped particles have less cutting ability than spherical shaped particles.true/false

Back 13

false

Front 14

________is a very fine abrasive used as a final polish for teeth and metallic restorations

Back 14

Tinoxide

Front 15

Excess pressure when polishing causes

Back 15

1.High rate of abrasion
2.Increases surface temp on materials surface
3.Amalgam-increased temp could release mercury to the surface causing an increase in corrosion and marginal breakdown

Front 16

Larger abrasive particles will cause deeper scratchesin a tooth surface than smaller abrasive particles.true/false

Back 16

true

Front 17

A correct polishing technique would include

Back 17

slow speed
wet field

Front 18

When polishing dental appliances or teeth, the sequence would be to start with a coarse abrasive and go to progressively finer abrasives until surface shiny.true/false

Back 18

true

Front 19

Dentin is harder than enamel and can withstand polishing process better than enamel can.true/false

Back 19

false

Front 20

The amount of toothpaste a patient uses will affect the rate of abrasion of the tooth surface. true/false

Back 20

true