dental materials

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  1. for a composite to have greater wear resistance it needs
    A. a higher oplish
    B. to have a higher filler content
    C. to have larger filler particles
    D. to be light cured
    B. to have higher filler content
    (this multiple choice question has been scrambled)
  2. composite resins are often classified according to their
    A. resin content
    B. filler partical size
    C. polishability
    D. strength
    B. filler partical size
    (this multiple choice question has been scrambled)
  3. the shortcomings of flowable composites as compared with hybrid composites include all of the following except one:
    A. they wear faster
    B. they are weaker
    C. they are more difficult to polish
    D. they shrink more when polymerized
    C. they are more difficult to polish
    (this multiple choice question has been scrambled)
  4. the purpose of a silane coupling agent for composite resins is
    A. to improve the bond between the filler particles and the resin matrix
    B. to help the various layers stick together
    C. to help the composite retain the color
    D. to reduce the oxygen inhibited layer
    A. to improve the bond between the filler particles and the resin matrix
    (this multiple choice question has been scrambled)
  5. the curing light requires repair
    A. if a 2 mm thick piece of composite does not cure through the bottom at the recommeded exposure time
    B. if it has not been tested
    C. if the light appears blue
    D. if it icauses a slower set of a dark color composite
    A. if a 2 mm thick piece of composite does not blah blah blah read it above
    (this multiple choice question has been scrambled)
  6. the polymerization shrinkage of a composite
    A. has no effect on the final restoration
    B. is greater than 10% in volume
    C. can be minimized by placing and curing a series of small increments
    D. is cause for alarm
    C. can be minimized by placing and curing a series of small increments
    (this multiple choice question has been scrambled)
  7. t/f all composite resorative materials appear the same on radiographs of teeth
    FALSE
  8. one of the advantages of glass ionomer is
    A. that it has been shown to release fluoride
    B. because it contains water, it does not need to have a dry field for insertion into a cavity
    C. ability to finish it immediately
    D. has a higher sstrength thatn composite because of glass fillers
    A. that it has been shown to release fluoride
    (this multiple choice question has been scrambled)
  9. hybrid (resin modified) glass ionomers have all of the following advantages over conventional glass ionomers except one:
    A. stronger
    B. can be finished the same appt
    C. less sensitive to moisture when set
    D. contains quartz fillers like some composites
    D. contains quartz fillers like some composites
    (this multiple choice question has been scrambled)
  10. compomer restorative materials
    A. are like glass ionomers in that they do not require a separate bonding agent
    B. are closer to composite resins in their makeup than to glass ionomers
    C. are only self cure resins
    D. release as much fluoride as glass ionomer materials
    B. are closer to composite resins in theri makeup than to glass ionomerss
    (this multiple choice question has been scrambled)
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74888
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dental materials
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chapter 6 review questions
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