Which cement is known for fluoride release and bonding to tooth structure?

Which cement is known for fluoride release and bonding to tooth structure?

• A. RMGI
• B. ZOE
• C. Calcium hydroxide
• D. Silver amalgam

Answer: (A)

The concept here is a cement that can both release fluoride and form a chemical bond with tooth structure. Resin-modified glass ionomer cement does both. It releases fluoride over time, which helps remineralize adjacent tooth tissue and provides an anti-cariogenic effect. It also bonds chemically to dentin and enamel through the glass ionomer component that interacts with calcium in hydroxyapatite, with the resin modifier enhancing adhesion and reducing sensitivity during placement. This dual property—fluoride release plus bonding to tooth structure—makes it preferable for luting and bases. Zinc oxide eugenol is mainly used as a temporary cement or base and does not bond to tooth structure or release fluoride in a clinically meaningful way. Calcium hydroxide is excellent as a liner or pulp-capping material and does release calcium hydroxide, but it does not provide durable bonding to tooth structure as a cement. Silver amalgam does not bond to tooth structure and does not release fluoride.

The concept here is a cement that can both release fluoride and form a chemical bond with tooth structure. Resin-modified glass ionomer cement does both. It releases fluoride over time, which helps remineralize adjacent tooth tissue and provides an anti-cariogenic effect. It also bonds chemically to dentin and enamel through the glass ionomer component that interacts with calcium in hydroxyapatite, with the resin modifier enhancing adhesion and reducing sensitivity during placement. This dual property—fluoride release plus bonding to tooth structure—makes it preferable for luting and bases.

Zinc oxide eugenol is mainly used as a temporary cement or base and does not bond to tooth structure or release fluoride in a clinically meaningful way. Calcium hydroxide is excellent as a liner or pulp-capping material and does release calcium hydroxide, but it does not provide durable bonding to tooth structure as a cement. Silver amalgam does not bond to tooth structure and does not release fluoride.