What is the common function of compactor instruments in dentistry?

Compactor instruments in dentistry are specifically designed for packing materials into cavities, making this choice the correct answer. When performing restorative procedures, it is essential to ensure that dental materials such as amalgam, composite resin, or other filling materials are densely packed into the cavity preparation. Proper packing helps to eliminate voids that could lead to leakage, secures the material in place, and maintains the integrity of the restoration.

Packing the material appropriately is crucial for the restoration’s longevity and effectiveness, as it enhances the bond between the tooth structure and the filling material. This is particularly important in posterior restorations, where the forces of occlusion can place considerable stress on restorations. By utilizing compactor instruments, dental professionals can achieve a well-condensed, stable, and durable restorative result.

The other options relate to functions that are not performed by compactor instruments. For example, removing dental plaque is typically done using hand instruments or ultrasonic scalers. Measuring cavity preparations involves the use of gauges or calipers rather than compactors. Sharpening other instruments is done with specific tools designed for that purpose, making them distinct from compactors. Thus, the primary role of compactor instruments is indeed to effectively pack materials into cavities during restorative dental procedures.