Wich of the following is FALSE concerning fluoride release and uptake with glass ionomers()
A.High level of fluoride is released initially
B.Sustained low levels of fluoride release over time
C.Fluoride release results in reduction of mechanical properties of the set cement
D.Recharge may be provided by topical fluorides
The following is a description of a glass-ionomer cement’s fluoride release pattern()
A.initial low-rate release,foilowed by long,low-rate release
B.initial high-rate release,followed by long,low-rate release
C.high.rate release throughout the GIC’s lifetime
D.polycarboxylate cement
If zinc phosphate cement is contaminated by moisture during setting()
A.its solubility increases
B.its hardness increases
C.its pH increases
D.its fluoride release increases
A.may be elevated in saliva
B.may enhance remineralization
C.may reduce bacteria growth and acid production
D.all of the above
The percentage filler content affects the resin composite’s()
A.shelf life
B.1evel of fluoride release
C.setting time
D.physical properties
Packable resin composites()
A.have been marketed as amalgam alternatives
B.always contain fluoride
C.can be adequately polymerized to a depth of 5 mln using a halogen light-curing unit
D.come in a broader range of shades than standard resin composites