What dental procedure commonly requires the use of an acorn burnisher?

The acorn burnisher is specifically designed for use in the restoration of dental cavities. This instrument is used to smooth and polish the surface of restorative materials, such as amalgam or composite resin, after they have been placed in the cavity. The unique acorn shape allows for effective burnishing, which contributes to the proper contour and finish of the restoration.

In cavity restoration procedures, it is crucial to ensure that the material is shaped correctly and has a smooth surface to avoid plaque accumulation and to restore the tooth's function and aesthetics. Burnishing also helps to enhance the bond between the tooth structure and the restorative material, ensuring durability and longevity of the filling.

Other procedures listed, such as tooth extraction, orthodontic adjustments, and root canal therapy, do not typically involve the use of a burnisher as part of their standard instruments. These procedures focus on different aspects of dental care, highlighting the specific role of the acorn burnisher in restorative dentistry.