What is one major feature of high-speed handpieces in dental practice?

High-speed handpieces are specifically designed to enhance the efficiency and precision of dental procedures, particularly in cavity preparation. Their ability to rotate at very high speeds allows dentists to make quick, controlled cuts in enamel and dentin, which is essential for creating clean and accurate cavities that can easily be filled. This precision is crucial when it comes to minimizing damage to surrounding tissues and ensuring that restorative materials can be placed effectively.

The other options do not accurately describe the primary attributes of high-speed handpieces. Low-cost disposables would not align with the typical use of high-speed handpieces, which are durable and not designed for single-use. While maintenance is necessary for all dental equipment, high-speed handpieces are built to be robust and generally require standard upkeep rather than extensive maintenance. Lastly, high-speed handpieces are versatile tools used across a wide range of dental procedures, not limited to pediatric patients, making them essential for both adult and child dental care.