Question

During intraoral scaling and extrinsic stain removal (selective polishing) procedures, the parts of a CAD/CAM-designed restoration at greatest risk for wear are the ________.

1) Occlusal surfaces
2) Lingual surfaces
3) Buccal surfaces
4) Proximal surfaces

Answer 1

The occlusal surfaces are most susceptible to wear during intraoral scaling and selective polishing, as they are the most exposed to the procedures.

Step-by-step explanation:

The parts of a CAD/CAM-designed restoration at greatest risk for wear during intraoral scaling and extrinsic stain removal (selective polishing) procedures are the occlusal surfaces. These surfaces are the most exposed to the scaling tools and abrasive materials used for polishing and stain removal.

The mechanical action can cause wear on the restorative material, especially if it is composed of materials that are less hard than the natural enamel. Therefore, it is essential for dental professionals to use care when scaling and polishing near these restorative surfaces to minimize potential damage.