What is the function of a high-speed handpiece in dentistry?

The function of a high-speed handpiece in dentistry primarily revolves around its ability to effectively remove decay and shape tooth structure. This tool operates at high rotational speeds, enabling dentists to perform procedures that require precision and efficiency. The high-speed handpiece is specifically designed for tasks such as cavity preparation, cutting through enamel and dentin, and reshaping teeth in restorative procedures. Its design allows for the use of various burs that facilitate this process, making it an essential instrument in a dentist's toolkit.

In contrast, while mixing dental cement, applying fluoride treatments, and polishing teeth are vital dental procedures, they do not fall under the primary function of a high-speed handpiece. Mixing dental cements typically requires a separate device or manual mixing technique. Fluoride treatments are usually applied using specialized applicators or trays, and polishing teeth is often accomplished with low-speed handpieces or rubber cups, designed for that specific purpose. Thus, the high-speed handpiece's role is distinctly aligned with removing decay and preparing teeth for further treatment or restoration.