HOSA Dental Terminology Practice

What is a high-speed handpiece commonly used for in dentistry?

1. To apply fluoride treatments

2. To remove bulk tooth structure during cavity preparations

3. To polish teeth

4. To mix dental materials

The correct answer is: To remove bulk tooth structure during cavity preparations

A high-speed handpiece is a crucial instrument in dentistry, primarily designed to remove bulk tooth structure during cavity preparations. This tool operates at higher speeds, usually around 300,000 to 400,000 revolutions per minute, which allows the dentist to efficiently and effectively cut through enamel and dentin. The design of the high-speed handpiece, along with its ability to use various types of dental burs, makes it well-suited for preparing teeth for fillings, crowns, or other restorative procedures. In contrast, the other options involve different tools or methods specific to those tasks. For example, fluoride treatments typically require a softer applicator or tray rather than a high-speed handpiece. Polishing teeth usually uses a low-speed handpiece with a rubber cup and a polishing paste, as a high-speed tool would be too aggressive for this purpose. Meanwhile, mixing dental materials is generally performed by hand or with a dedicated mixing device, as it does not require the precision cutting that a high-speed handpiece provides. This understanding of the high-speed handpiece's function in cavity preparation highlights its importance in modern dental procedures.