PRR restoration materials are commonly which combination?

• A. Amalgam or resin.
• B. Glass ionomer cement or resin.
• C. Ceramic onlays.
• D. Gold foil.

Answer: (B)

In PRR restorations, the materials used are chosen for both sealing the caries-prone area and restoring anatomy, typically involving glass ionomer cement and resin composite. Glass ionomer cement is favored because it bonds to dentin, tolerates some moisture, and releases fluoride, which helps remineralize tooth structure and reduce the risk of recurrent decay. Resin composite is chosen for its superior esthetics and wear resistance, allowing a durable, natural-looking surface.

In practice, a common approach is a layered or “sandwich” technique: a glass ionomer base or liner is placed to seal and protect the affected dentin and provide fluoride benefits, then a resin composite layer is added to recreate shape and function. Sometimes resin alone may be sufficient in well-controlled cases, but the combination of glass ionomer cement with resin covers the typical needs of PRR.

Other materials like amalgam, ceramic onlays, or gold foil are not standard in PRR restorations, which is why the commonly used pairing is glass ionomer cement and resin.