Restorative & Materials · single question
Which restorative material chemically bonds to tooth structure and does NOT require a separate bonding/adhesive agent?
Show answer and explanation
Correct answer: A. Conventional glass ionomer
- A. Correct. Conventional glass ionomer chemically bonds to enamel/dentin via ionic exchange (carboxylate groups bonding to calcium) and releases fluoride — no separate bonding agent needed.
- B. Composite resin requires etch and a bonding agent to adhere.
- C. Resin-modified materials still rely on a bonding/conditioning step for optimal adhesion.
- D. Compomers require a bonding agent and bond less reliably than glass ionomer.
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