Chapt 11 Cutting, Grinding And Finishing, And Polishing

Question 1

Abrasive

Answer 1

A sharp, hard, natural or synthetic substance used for grinding, finishing, or polishing a softer surface.

Question 2

Air-particle abrasion

Answer 2

Process of removing material, contaminants, stain, or carious tissue by use of air pressure and abrasive particles appropriate for the substrate being treated.

Question 3

Buffing

Answer 3

Process of producing a lustrous surface through the abrading action of fine abrasives bound to a nonabrasive carrier with or without a liquid or paste medium.

Question 4

Bulk reduction

Answer 4

Process of removing excess material (natural tooth or synthetic structure) by cutting or grinding with rotary instruments to provide a desired anatomic form.

Question 5

Contouring

Answer 5

Process of producing a desired anatomic form by cutting or grinding away excess material.

Question 6

Cutting

Answer 6

Process of removing material from the substrate by use of a bladed bur or an abrasive embedded on a bur or disc.

Question 7

Finished and polished restoration

Answer 7

A prosthesis or direct restoration whose outer surface has been refined to a desired state of surface finish.

Question 8

Finishing

Answer 8

Process of removing surface defects or scratches created during the contouring process through the use of cutting or grinding instruments or both.

Question 9

Glaze ceramic

Answer 9

A specially formulated ceramic powder that, when mixed with a liquid, applied to a ceramic surface, and heated to an appropriate temperature for a sufficient time, forms a smooth glassy layer on a dental ceramic surface (see natural glaze).

Question 10

Grinding

Answer 10

Process of removing material from a substrate by abrasion with relatively coarse particles.

Question 11

Natural glaze

Answer 11

A vitrified layer that forms on the surface of a dental ceramic containing a glass phase when the ceramic is heated to a glazing temperature for a specified time.

Question 12

Overglaze

Answer 12

Thin surface coating of glass formed by fusing a thin layer of glass powder that becomes a viscous liquid at a lower temperature than that associated with the ceramic substrate.

Question 13

Polish

Answer 13

Luster or gloss produced on a finished surface.

Question 14

Polishing

Answer 14

Process of providing luster or gloss on a material surface.