Which bur shank is used with a high-speed dental handpiece?

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High-speed handpieces require burs that are held by friction in the chuck. A friction-grip shank is designed to be clamped securely by the high-speed chuck, allowing very fast rotations and quick bur changes without a retaining groove or latch. Straight shanks are intended for straight, slower handpieces and won’t engage properly in a high-speed chuck. Latch-type burs use a groove-and-latch system typical of slow-speed chucks, not the friction-grip mechanism of high-speed units. Push-button designs are simply a release method for friction-grip shanks, but the essential compatibility is the friction-grip retention. So, the bur shank used with a high-speed dental handpiece is the friction-grip type.