What is a common use for the electric handpiece unit in dental practices?

The electric handpiece unit is commonly used in dental practices for preparing cavities with burs. This is due to its ability to provide a consistent and powerful rotational speed, which allows for efficient and precise cutting of tooth structure. The electric handpiece is particularly effective for entering and shaping cavities, as it can maintain a stable speed even under load, which results in smoother and more controlled cutting compared to other handpieces.

The use of this unit not only enhances the efficiency of the dental procedure but also improves the comfort of the patient by minimizing vibrations and noise associated with air-driven handpieces. Its precision and torque are critical for tasks such as removing decay, preparing a tooth for a filling, and performing other restorative procedures where accuracy is paramount.