Which instrument is used to smooth and polish dental restorations?

The mandrel disc is specifically designed for the purpose of smoothing and polishing dental restorations. These discs attach to a mandrel, which is a rod used to hold and drive the disc in high-speed dental handpieces. When used correctly, mandrel discs can effectively refine the surfaces of dental materials, ensuring a smooth finish that is both aesthetically pleasing and hygienic. This polishing step is crucial in preventing plaque accumulation and enhancing the longevity of restorations, such as fillings or crowns.

In contrast, the other instruments serve different functions in dental settings. A cement spatula is utilized for mixing dental cements and materials, playing a role in the preparation rather than the finishing of restorations. A spoon excavator is designed to remove decay and debris from teeth, focusing on cleaning rather than polishing. Lastly, a mixing pad is used to facilitate the mixing of materials for dental procedures but does not have a role in the smoothing or polishing process. Understanding the specific functions of these tools is vital in ensuring effective patient care and optimal outcomes in dental procedures.