Which handpiece operates at high speed for cutting and drilling in restorative procedures?

Which handpiece operates at high speed for cutting and drilling in restorative procedures?

• A. Round burs
• B. Air turbine handpiece
• C. Slow straight hand piece
• D. Slow contra-angle handpiece

Answer: (B)

Air turbine handpiece operates at high speed because its turbine is powered by compressed air, driving the bur to very high revolutions per minute. This rapid rotation is essential for quickly cutting enamel and dentin during cavity preparation and other restorative drilling tasks. The high speed allows efficient material removal with a light touch and minimal torque, and it’s typically cooled with water spray to prevent overheating of the tooth. In contrast, slow-speed handpieces run at much lower RPM and are used for finishing, polishing, or procedures that require more control and torque in confined areas. The other terms mentioned relate to cutting tools or slower instruments rather than the high-speed device itself.

Air turbine handpiece operates at high speed because its turbine is powered by compressed air, driving the bur to very high revolutions per minute. This rapid rotation is essential for quickly cutting enamel and dentin during cavity preparation and other restorative drilling tasks. The high speed allows efficient material removal with a light touch and minimal torque, and it’s typically cooled with water spray to prevent overheating of the tooth.

In contrast, slow-speed handpieces run at much lower RPM and are used for finishing, polishing, or procedures that require more control and torque in confined areas. The other terms mentioned relate to cutting tools or slower instruments rather than the high-speed device itself.