Abstract: In a dental root canal instrument which comprises a working part 1 provided with cutting edges, the working part being provided with one or more cutting edges 2 distributed around the circumference of the working part in the cross section thereof, and the instrument having a free end of the working part 1 designated as a tip 3, the tip 3 being formed as a rounded cap, and wherein a portion of the working part 1 which follows the tip 3 is designed over a length designated as a guide section 7 such that material is removed exclusively within a range of not more than 180° of the circumference thereof, the invention suggests that the working part 1 should comprise, as a rule, two or more helically extending cutting edges 2, with only one cutting edge 2 being arranged in the guide section 7 and the guide section 7 towards the tip being of a more tapering conicity than the remaining working part 1.

Abstract: The present invention relates to a finisher set for the cosmetic aesthetic treatment of teeth, the set comprising a plurality of finishers each including a shaft (b 5) adapted to be clamped into a drive means, as well as a conical head provided with cutting edges, characterized in that a first finisher (1) comprises a head (2) with helical cutting edges and a transverse cut, and that a second finisher (3) is provided with a head (4) having helical cutting edges.

Abstract: The present invention relates to a dental tool (1) comprising a head (2) and a rotatably supported shaft (9). The head (2) comprises a first toothing (A), a second toothing (B), and a third toothing (C). Thus, different materials can be roughed and also finished by means of said triple toothing.

Abstract: The present invention relates to a grinding tool for dental purposes comprising a support body which is covered at least in part with abrasive material, wherein at least a portion of the support body is provided with a honeycomb structure.