Theory II wk 3 ch 27

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jackiedh
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63276
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Theory II wk 3 ch 27
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2011-01-31 18:44:13
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Theory II
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Theory II wk 3 ch 27
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  1. What is a substance applied with a toothbrush or other applicator?
    Dentrifice
  2. Name 3 removal uses for dentrifice. What are two other agent/effect uses for dentrifice?
    • Biofilm, stain, deposit removal
    • Application of therpeutic agents (fluoride)
    • Superficial cosmetic effects (whitening)
  3. reduction of biofilm formation and gingivitis
    prevention of dental caries
    remineralization of tooth structure
    prevention of dental caries
    remineralization of early noncavitated dental caries
    reduction of hypersensitivity
    reduction of supragingival calc formation
    are all examples of _________ benefits of ________
    • therapeutic
    • dentrifice!
  4. name two agents used to prevent the attachment of biofilm:
    • triclosan
    • zinc citrate
  5. _________ is the primary agent that has shown efficacy in reducing gingival inflammation
    triclosan
  6. triclosan combined with copolymer (PVM/MA) = _______ ________ making effects last ______
    • increased substantivity
    • longer
  7. the use of dentrifice has shown:
    significant reductions in _________ biofilm formation,
    reduction in gingival inflammation in _____ (mouth), and in _____ (in a petri dish in a lab)
    • supragingival
    • in vivo (VIVO LAS VEGAS!)
    • in vitro
  8. the most commonly used agent in a commercial dentrifice for the reduction of dentin hypersensitivity is:
    5% potassium nitrate
  9. what does fluoride enhance?
    remineralization
  10. remineralization reduces ______ and dental _______
    • sensitivity
    • dental caries
  11. Name four supragingival calc dentrifices that break the mineralization bond (plaque to calc):
    • pyrophosphate salts
    • zinc salts
    • sodium hexametaphosphate
    • triclosan

    salt salt salt and triclosan
  12. pigments from foods, tobacco, or chemical agents can become embedded in the aquired ________ and dental _______
    • pellicle
    • biofilm
  13. cosmetic results from dentrifices are: (2)
    • mechanical removal of stained biofilm
    • delivery of bleaching agent
  14. most dentrifices basic components include a detergent, ________, sweetener, ________, and therapeutic agent. they come in _______ and ______ form.
    • abrasive
    • humectant
    • pastes
    • gels
  15. water _____% - ___% is the amount in dentrifices
    20-40%
  16. 1-2% of the _________ agent prevents or enhances (such as Fl2 or desensitizer)
    therapeutic
  17. a therapeutic dentrifice has a _____ or _______ agent added for a specific preventive or therapeutic action
    • drug
    • chemical agent
  18. 1-2% of __________ lower surface tension
    penetrate and loosen surface deposits
    detergents
  19. The foaming action of ________: moistens and lifts off tooth
    detergents
  20. name the two substances used in a detergent (hint: both sodium)
    • sodium lauryl sulfate USP
    • sodium N-lauryl sarcosinate
  21. abrasives are ____% - ____%.
    20-40%
  22. T/F abrasives and polishing agents clean well with slight damage to the tooth surface
    FALSE! NO damage to the surface
  23. T/F a polishing agent is used to produce a rough tooth surface
    False! Smoooooooth
  24. T/F a smooth tooth surface can prevent or delay the reaccumulation of stains and deposits?
    TRUE
  25. Name the 6 abrasives used in dentrifices:
    (hint: cc, ps, hao, s, s, dsg)
    • calcium carbonate
    • phosphate salts
    • hydrated aluminum oxide
    • silica
    • silicates
    • dehydrated silica gels
  26. what is silica?
    sand
  27. binders/thickeners: ___% - ___%
    1 - 2%
  28. what are the two purposes of the binders (thickeners)?
    • stabilize the formulation
    • prevents separation of the solid and liquid ingredients during storage
  29. name the two colloids, gum and cellulose types used in binders:
    • mineral colloids
    • seaweed colloids
    • natural gums
    • synthetic celluloses
  30. what are the two purposes of humectants?
    • retain moisture
    • prevent hardening on exposure to air
  31. ___% - ___% of humectants
    20 - 40%
  32. xylitol, glycerol, and sorbitol are the three substances used in _________
    humectants
  33. ___% - ___% for preservatives
    2-3%
  34. what prevents bacterial growth and prolongs shelf-life?
    preservatives, like the awful for you preservatives in food!
  35. alcohol, benzoates, and dichlorinated phenols are substances used in ___________
    preservatives
  36. ________ ________ impart a pleasant flavor for pt acceptance and mask other ingredients that may have a nasty flavor
    flavoring agents (sweeteners)
  37. essential oils such as peppermint, cinnamon, wintergreen, and clove are substances used for what?
    flavoring agents
  38. the artificial non-cariogenic sweeteners are: (3)
    • xylitol
    • glycerol-humectant
    • sorbital-humectant
  39. ___% -___% is for flavoring agents
    1-1.5%

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