This special dental radius cutter has a semicircular rounded tip. It is available with cutting-edge diameters of 0.3 mm to 2.0 mm. While the 2.0 mm tool is mainly used for efficient roughing, tools with a small diameter of 0.3 or 0.6 mm are mainly used for finely finishing or carving out fissures. Due to the especially long free grinding of these tools, undercuts can also be reached easily.
Depending on their field of application, the radius cutters have one to four cutting edges: for PMMA and wax, there are, for instance, extremely sharp single-tooth cutters available with a very low tendency to clog. On the other hand, the 2 mm cutters for the abrasive zirconium oxide have three cutting edges and the CoCr cutters even have four in order to reduce the wear for each cutting edge and to ensure greater process reliability.