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BDS2 Dental Materials > Resin Modified Glass Ionomer Cement > Flashcards

Resin Modified Glass Ionomer Cement Flashcards

1
Q

components of RMGIC

A

powder [glass]
liquid

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2
Q

powder composition

A

fluoro-alumino-silicate glass
barium glass
vacuum dried poly acrylic glass
ascorbic acid
pigments

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3
Q

liquid composition

A

HEMA, polyacrylic acid, tartaric acid [speeds reaction] water
PHOTO INITIATORS ALLOWS LIGHT CURE

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4
Q

setting reaction dual curing

A

mixing same as GIC dissolution
light activation, free radial methacrylate occurs, resin matrix formed
acid base reaction

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5
Q

setting reaction tri curing

A

dissolution same as GIC
REDOX occurs, light activation and resin matrix formed, REDOX continues, acid base reaction for several hours
final hardening may take days

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6
Q

RMGIC properties

A

good - bonding tooth tissue, no contraction of setting, low microleakage
bad - polymerisation contraction, swelling on uptake of weater, monomer leaching

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7
Q

RMGIC or GIC

A

RMGIC has better aesthetics, easier to use, stronger

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BDS2 Dental Materials (12 decks)

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