What is the function of a low-speed handpiece in dental units?

The function of a low-speed handpiece in dental units is primarily to remove caries and for fine finishing work. This type of handpiece operates at a lower rotational speed compared to high-speed handpieces, making it ideal for more delicate procedures in dentistry. The low-speed handpiece allows for precision in procedures such as root canal treatments, where careful removal of decay is necessary, as well as in polishing and finishing restorations.

While polishing teeth is also a function associated with low-speed handpieces, it is not the primary function. Drilling into teeth, typically associated with high-speed handpieces, involves cutting enamel and dentin at high velocities, which requires a different tool due to the need for rapid and efficient material removal. Cleaning dental instruments is an entirely separate aspect of dental practice and does not pertain to the functions of handpieces. Thus, the role of the low-speed handpiece as a tool for removing caries and performing fine finishing work is what distinguishes its primary function within dental procedures.