Dental Materials

  1. t/f composite shrinks towards the light (its drawn to it like brittany!)
    FALSE! its not good to be drawn to the light it shrinks toward the CENTER!
  2. how do you get less polymerization shrinkage?
    smaller increments
  3. what willl larger increments of composite cause?
    • leakage or post insertion sensitivity
    • Biting discomfort
  4. Greater resin content=
    greater shrinkage
  5. t/f if you have greater resin content in your composite you will have less shrinkage
  6. greater filler content= ______ the CTE
  7. the greater the resin content= _____ cte
  8. t/f when taking a shade you want a dry tooth for a best match
    false...MOIST TOOTH
  9. when should you take a shade?
    BEFORE isolation w/rubber dam or cotton roll
  10. ______ of the tooth is closest to the dentin color?
  11. if no contamination occurs how do the layers of composite bond to each other?
  12. t/f you must bond in between each layer for them to stick together
    false! bond to each other CHEMICALLY if no contamination occurs
  13. light cure composites should be in ______ compules or syringes
  14. ___ mm increments should be placed at maximum for composite?
  15. resin to resin bonding is what type of bond?
  16. dentin should be ____ when bonded to resin
    MOIST baby you know it!
  17. t/f you can use alcohol to wet the composite instruement to help so the composite does not stick
    False! Do NOT do it! YA HEAR ME! DON'T DO IT! or ELSE!
  18. what must be done to the composite to prevent sticking?
  19. liners and bases with _____ should not be used because it inhibits the set of resin
  20. why shouldn't liners and bases with eugenol be used?
    inhibits the set of resin
  21. what is the most popular light curing unit?
    LED (light emitting diode)
  22. how often should the light be checked?
    MONTHLY, just like our monthly curse when you bleed you check that light! (unless you never bleed then you better figure out a better way to remember to check that light)
  23. t/f the lights cause retina damage so you should wear eye protection
    true! so don't be brittany and stare at the pretty blue light
  24. t/f the light and the composite emit heat and can cause pulp damage
  25. What does the operatory light do to the composite?
    premature set of composite
  26. what type of restorative material is FLUORIDE RELEASING?
    glass ionomers
  27. t/f you must bond when placing a glass ionmers
    FALSE bond to tooth WITHOUT additional bonding agent
  28. glass ionomers are _____ _____ binding and maintain a better seal than composite
    calcium ion
  29. t/f glass ionomers are fluoride containing but not fluoride releasing
    FALSE! don't believe it! glass ionomers ARE fluoride releasing!
  30. should you use a glass ionomer in a high stress bearing area?
  31. what are 5 uses of glass ionomers?
    • luting CEMENT
    • RESTORATIVE material
    • lamination or sandwich technique
  32. in what four was are glass ionomers used as restorative materials?
    • root caries
    • non carious cervical lesion
    • anterior class III
    • core build up with tooth support
  33. with a hybrid ionomer what is added to improve physical properties?
    HEMA (hydroxylethyl methacrylate) say that ten times fast I dare you!
  34. t/f a hybrid ionomer is fluoride releasing
  35. t/f hyprid ionomers are used in permanent teeth because the excessive wear is not a problem
    false, PRIMARY TEETH!
  36. what type of bonding agent should you use with glass ionomers?
    10% polyacrylic acid
  37. t/f when using a glass ionomer you should use phosphoric acid as your bonding agent
    false! thats a no no! use 10% polyacrylic acid for 10 seconds to the dentin. GOT IT!?!
  38. what is fluoride containing but is NOT fluoride releasing?
  39. compomers are composite resins modified with ______
Card Set
Dental Materials
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