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for a composite to have greater wear resistance it needs
A. to have a higher filler content
B. to have larger filler particles
C. a higher oplish
D. to be light cured
A. to have higher filler content
composite resins are often classified according to their
A. filler partical size
B. resin content
C. strength
D. polishability
A. filler partical size
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
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 reduce the oxygen inhibited layer
C. to help the various layers stick together
D. to help the composite retain the color
A. to improve the bond between the filler particles and the resin matrix
the curing light requires repair
A. if the light appears blue
B. if it has not been tested
C. if it icauses a slower set of a dark color composite
D. if a 2 mm thick piece of composite does not cure through the bottom at the recommeded exposure time
D. if a 2 mm thick piece of composite does not blah blah blah read it above
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
t/f all composite resorative materials appear the same on radiographs of teeth
True
False
FALSE
one of the advantages of glass ionomer is
A. because it contains water, it does not need to have a dry field for insertion into a cavity
B. that it has been shown to release fluoride
C. has a higher sstrength thatn composite because of glass fillers
D. ability to finish it immediately
B. that it has been shown to release fluoride
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
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
Author
cassiedh
ID
74888
Card Set
dental materials
Description
chapter 6 review questions
Updated
2011-03-24T02:56:14Z
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