What type of material is polished using a slow-speed handpiece under expanded function level 2?

In Iowa, under the expanded function level 2, the slow-speed handpiece is commonly used for polishing adhesive restorative materials. This is because adhesive materials often require a specific technique to achieve a smooth surface that enhances aesthetics and reduces plaque retention.

Polishing these materials effectively ensures they integrate well with the surrounding tooth structure while maintaining their longevity and functionality. The use of the slow-speed handpiece allows for a controlled and gentle polishing process, essential for preserving the integrity of the adhesive layer and minimizing any potential damage.

This level of expanded function is specifically designed to enhance the capabilities of dental hygienists in providing comprehensive care, focusing on materials that integrate adhesives, thus justifying the answer choice related to adhesive restorative material. Other materials such as composites and amalgam may be polished in general practice but fall under different techniques and considerations related to their unique properties and handling.