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  • A rotary cutting device, the working end of which is made from steel coated with small diamond crystals, that is designed to fit into a dental handpiece and intended to cut hard structures in the mouth, such as teeth or bone. Diamond burs can also be used to cut hard metals, plastics, porcelains, and similar materials. Dental burs with a working head that includes bound diamond chips or is covered with diamond film are usually intended for use with ultra-high-speed rotary dental handpieces. These burs typically consist of a shank with a well-differentiated working head in a variety of sizes and shapes (e.g., cone, cylinder, inverted cone, pear) on the distal end; a tapered, notched, or elongated proximal end to fit into the rotary device; and a neck that connects the shank to the working part. Dedicated diamond dental burs, either disposable or reusable, are available for many different uses, including removal of carious material from teeth, dental cavity preparation, and finishing and polishing of teeth and restorations (e.g., porcelain, metal); they are particularly useful to prepare teeth for indirect restorations.
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