Restorative & Materials · single question
What is the BEST material for a Class V restoration (cervical area)?
Show answer and explanation
Correct answer: C. Glass ionomer cement
- A. Incorrect. Sealants are for pit-and-fissure caries prevention — not Class V restorations.
- B. Incorrect. Amalgam requires mechanical retention (undercuts) and is not ideal for cervical lesions, which often extend below the gingival margin in a moisture-prone area.
- C. Correct. GLASS IONOMER CEMENT (or resin-modified glass ionomer) is the BEST material for Class V restorations because: (1) Chemical adhesion to enamel AND dentin — no acid etching needed, (2) FLUORIDE RELEASE — therapeutic for cervical/root caries, (3) Moisture tolerant — important in the cervical area near gingival sulcus, (4) Coefficient of thermal expansion similar to tooth.
- D. Incorrect. Composite can be used for Class V, but glass ionomer has advantages specific to this area: fluoride release, adhesion to dentin, moisture tolerance, and no need for acid etching.
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