Which tool is typically used for finishing a tooth preparation?

The appropriate choice for finishing a tooth preparation is typically a fine grit diamond. This tool is designed to provide a smooth, polished surface after the main shaping and contouring of the tooth preparation have been completed. Utilizing a fine grit diamond allows for the refinement of the tooth’s surface, which is crucial for achieving optimal adaptation of the final restoration, whether it be a crown, bridge, or any other prosthetic device.

The use of a fine grit diamond minimizes the risk of over-reducing the tooth structure while effectively smoothing the edges and surfaces, thus enhancing the fit and aesthetics of the restoration. Fine grit diamonds have a smaller particle size that allows for a gentler abrasion which is essential for finishing because it leaves a finer surface ideal for subsequent measures, such as polishing or bonding.

Conversely, coarse grit diamonds are typically used during the initial preparation stages to remove significant amounts of tooth material quickly. They create a rougher surface that is not suitable for finishing as it could hinder the quality of the final restoration. A high-speed handpiece is an essential tool for many dental procedures, but it does not specifically describe the type of finishing technique employed on tooth preparations; therefore, it is not the tool specifically designated for this task.