11.17 9:07 AM
Dental Materials – GIC (Glass Ionomer Cement)
GLASS IONOMER CEMENT — QUICK REVISION NOTES
1. Definition
A tooth-colored acid–base cement formed by reaction between fluoroaluminosilicate
glass and polyalkenoic acid, capable of chemical bonding to tooth structure and
releasing fluoride.
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2. Composition
Powder:
Fluoroaluminosilicate glass
Calcium fluoride
Aluminum oxide
Silica
Barium/strontium (radiopacity)
Pigments
Liquid:
Polyacrylic acid (40–50%)
Water
Tartaratre (accelerator)
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3. Setting Reaction
Acid–base reaction:
1. Attack of polyacid on glass particles
2. Release of Ca²⁺ (initial set), Al³⁺ (later hardening)
3. Formation of calcium polyacrylate → aluminum polyacrylate matrix
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Dental Materials – GIC (Glass Ionomer Cement)
GLASS IONOMER CEMENT — QUICK REVISION NOTES
1. Definition
A tooth-colored acid–base cement formed by reaction between fluoroaluminosilicate
glass and polyalkenoic acid, capable of chemical bonding to tooth structure and
releasing fluoride.
---
2. Composition
Powder:
Fluoroaluminosilicate glass
Calcium fluoride
Aluminum oxide
Silica
Barium/strontium (radiopacity)
Pigments
Liquid:
Polyacrylic acid (40–50%)
Water
Tartaratre (accelerator)
---
3. Setting Reaction
Acid–base reaction:
1. Attack of polyacid on glass particles
2. Release of Ca²⁺ (initial set), Al³⁺ (later hardening)
3. Formation of calcium polyacrylate → aluminum polyacrylate matrix
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