Rotary instruments are dental tools used primarily for cutting, shaping, and polishing teeth and dental materials. They operate using a rotating motion, which allows for precise and efficient removal of tooth structure. Common types of rotary instruments include dental handpieces, burs, and diamond instruments, each designed for specific tasks in dental procedures. These instruments are essential in various dental treatments, such as cavity preparation, root canal therapy, and cosmetic dentistry. The use of rotary instruments enhances the speed and accuracy of dental work, improving patient outcomes and comfort during procedures. Proper maintenance and sterilization of these tools are crucial for ensuring safety and effectiveness.