mod 8, ch 19 test 2

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Author:
jackiedh
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75785
Filename:
mod 8, ch 19 test 2
Updated:
2011-03-28 22:28:30
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test review
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theory II
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  1. where do extrinsic stains occur? can they be removed by polishing, scaling, or brushing?
    • on the external surface of the tooth
    • yes
  2. which stains occur within the tooth substance and cannot be removed by techniques of scaling or polishing?
    intrinsic
  3. which stains may be extrinsic and stay on the outer surface of the tooth or intrinsic and become incorporated within the tooth structure?
    exogenous
  4. which stain develops or originates from sources outside the tooth?
    exogenous
  5. which stains develop or originate from within the tooth?
    endogenous
  6. which stains are always intrinsic and usually are discolorations of the dentin reflected through enamel?
    endogenous
  7. coffee stains are primarily what concern?
    appearance or cosmetic effect
  8. heavy deposits may penetrate the enamel and become exogenous intrinsic, which type of stain is this?
    tobacco stain (usually smokeless tobacco)
  9. t/f discoloration may be generalized or limited to specific parts of individual teeth that were developing at the time of administration of the antibiotic
    true
  10. _____ _____ can affect a single tooth, white spots may become stained as in systemic hypoplasia
    local hypoplasia
  11. how does silver amalgam enter the tooth?
    metallic ions migrate from the amalgam restoration into the enamel and dentin
  12. CHX and alexidine are used in mouthrinses and are effective against what?
    biofilm formation
  13. t/f tetracycline may be generalized or limited to specific parts of teeth that were developing at time of administration
    true
  14. which stains may become intrinsic from exogenous source?
    tobacco and green stains

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