For what purpose is a ball burnisher primarily used in dentistry?

A ball burnisher is primarily used in dentistry to smooth the surface of amalgam restorations. This instrument is designed with a rounded working end that allows for a gentle yet effective polishing action, which is crucial for achieving a smooth, shiny surface on the amalgam. Smoothing the amalgam not only enhances the aesthetic appearance of the dental restoration but also reduces the risk of plaque accumulation, thus promoting better oral hygiene.

While other tools and techniques may be employed for packing amalgam or adjusting resin fillings, the specific design and function of the ball burnisher make it particularly suited for smoothing. This smoothing process helps to create a seamless transition between the dental restoration and the surrounding tooth structure, ensuring that the occlusion (bite) is appropriately maintained and patient comfort is maximized.