Which dental instrument is called a disposable prophy brush?

The term "disposable prophy brush" refers specifically to a dental instrument designed for polishing teeth in a single-use format. These brushes are usually made with soft bristles and are intended to be used during dental cleanings to apply polishing paste to the surface of the teeth, helping to remove stains and plaque.

The focus on its disposable nature emphasizes convenience and hygiene, as these brushes can be used once and then safely discarded, minimizing the risk of cross-contamination. This is particularly important in a dental setting where maintaining a sterile environment is crucial for patient safety.

Other options describe instruments that serve different purposes, such as scaling or applying fluoride, each with their unique materials and usage protocols, thus clarifying the specific role that disposable prophy brushes play in preventive dentistry.