What is it?

A dental burr is a type of burr (cutter) used in a handpiece. The burrs are usually made of tungsten carbide or diamond. The three parts to a burr are the head, the neck, and the shank

What is it used for?

Dental burs are used for cutting hard tissues - tooth or bone. They are made of steel, stainless steel, tungsten carbide and diamond grit.