What type of rotary instrument grit is recommended for final steps of restoration?

A fine-grit rotary instrument is recommended for the final steps of restoration because it allows for a smooth finish on the restored surface. The use of fine grit helps to minimize any scratches or roughness, resulting in a polished and aesthetically pleasing appearance. This is particularly important in prosthetic dentistry where the restoration needs to blend seamlessly with the natural teeth and surrounding tissues, ensuring both functional and aesthetic outcomes.

Additionally, fine-grit instruments help in achieving precise contours and margins, which are critical for proper function and maintenance of oral hygiene. The smooth surface created by fine grit also reduces plaque accumulation, ultimately benefiting the longevity of the restoration. In contrast, coarser grits can leave surface irregularities that may detract from both the appearance and functionality of the restoration.