Which instrument is used in conjunction with a mallet to assist in bone removal?

The correct choice is the chisel, as it is specifically designed for use with a mallet to facilitate bone removal during dental or surgical procedures. The chisel has a sharp edge that allows the dental professional to precisely cut and shape bone. When used in conjunction with a mallet, the force from the mallet drives the chisel to make cuts in the bone, enabling more controlled removal. This combination is particularly useful in procedures where the bone needs to be shaped or trimmed effectively.

In contrast, cow horn forceps are primarily used for extracting teeth, not for bone removal. A disposable prophy angle is utilized for polishing teeth, offering no functionality related to bone removal. The bone file is utilized for smoothing rough edges of bone rather than removing bone itself. Understanding the specific functions of these instruments helps clarify why the chisel is the appropriate choice in this context.