keywords ch 12

  1. a procedure used to reduce excess restorative material to develop appropriate occlusion and contour; this is usually done with rotary cutting instruments. Finishing removes surface blemishes and produces a smooth surface. Finishing requires the hardest appropriate material except at the margin of the restoration, where the tooth structure may be affected
  2. a procedure that produces a shiny, smooth surface by eliminating fine scratches, minor surface imperfections and surface stains using mild abrasives frequently found in the form of pastes or compounds. _________ produces little change in the surface. It may have to be repeated periodically during the life of the restoration if tarnish or stains develop. Polishing requires materials with Mohs' harness of only 1 to 2 units above the substrate being polished
  3. a material composed of particles of sufficient harness and sharpness to cut or scratch a softer material when drawn across its surface
  4. the particle size of the abrasive, typically classified as course, medium, fine, and superfine
  5. a procedure that is primarily meant to remove soft deposits from the surface of restorations and tooth structures. Polishing and cleansing are done to remove surface stains and soft deposits from the clinical crowns and exposed root surfaces of teeth after all hard deposits are removed. Aside from abrasives, there are also chemical cleansing products that are primarily used for removable appliances. Cleansing requires materials with Mohs' hardness no greater than equal to the substrate
  6. a procedure for removal of excessive restorative material from margins of restorations
  7. feather-like excessess of material present on occ and proximal surfaces
  8. excessive material present at the cervical cavosurface margin
Card Set
keywords ch 12
dental materials ch 12 keywor