Dental Materials

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Author:
sthomp88
ID:
77919
Filename:
Dental Materials
Updated:
2011-04-21 16:28:57
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Chapter twelve key terms
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week twelve
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  1. a procedure used to reduce excess restorative material to develop appropriate occlusion and contour; this is usually done with rotary cutting instruments. It removes surface blemishes and produces a smooth surface. It requires the hardest appropriate material except at the margin of the restoration, where tooth structure may be affected.
    finishing
  2. a procedure that produces a shiny, smooth surface by eliminating fine scrateches, minor surface imperfections, and surface stains using mild abrasives frequently found in the form of pastes of compounds. It produces little change in the surface, it may habe to be repeated periodically during the life of the restoration if tarnish or stains develop. It requires materials with a Mon's hardness of only 1-2 units above the substance being polished.
    polishing
  3. a material composed of particles of sufficient hardness and sharpness to cut or scratch a softer material when drawn across its surface
    abrasive
  4. the particle sixe of the abrasive, typically classified as coarse, medium, fine, and superfine
    grit
  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. It requires materials with Mon's hardness no greather than equal to the substrate
    cleansing
  6. a procedure for removal of excessive restorative material from margins of restorations
    margination
  7. feather-like excesses of material present on occlusal and proximal surfaces
    flash
  8. excessive material present at the cervical cavosurface margin
    overhang

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