Resin-modified glass.ionomer materials may set by()
A. acid-base reaction
B. free-radical polymerization
C. light initiation
D. all of the above
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In mixing zinc phosphate cement,which clinical variable has the greatest effect on the strength of the cement()
A. spatulation time
B. liquid-powder ratio
C. temperature ofthe mixing slab
D. number and size ofpowder increments
适当调和的磷酸锌水门汀基底料在充填时被唾液污染,污染会造成怎样的不良影响?
聚羧酸锌水门汀与被粘物间的作用力既有________又有_______。