Abstract: The present invention refers to an instrument, configured as a dental instrument or surgical instrument, the instrument comprising a shaft and a substantially rotation-symmetrical head which is attached to the shaft and provided with a plurality of cutting blades, the cutting blades being arranged distributed around the whole circumference of the head, in relation to a centric rotational axis of the instrument, characterized in that each cutting blade has a geometry differing from the other cutting blades.

Abstract: The present invention refers to an instrument, configured as a dental instrument or surgical instrument, the instrument comprising a shaft and a substantially rotation symmetrical head which is attached to the shaft and provided with a plurality of cutting blades, the cutting blades being arranged distributed around the whole circumference of the head, in relation to a centric rotational axis of the instrument, characterized in that each cutting blade has a geometry differing from the other cutting blades.

Abstract: A dental tool includes a working head 3 rotatable about a rotational axis 1 and attached to a shaft 2, which working head is provided with cutting edges 4, 5. Cutting edges 4 of a first toothing are formed about a complete periphery of the working head 3, cutting edges 5 of a second toothing are formed additionally at sector-type partial regions of the working head 3, and sector-type regions are provided at a front face 6 of the working head 3, in which the cutting edges 4, 5 of the first and second toothing end alternatingly in the circumferential direction.

Abstract: A dental tool includes a working head 3 rotatable about a rotational axis 1 and attached to a shaft 2, which working head is provided with cutting edges 4, 5. Cutting edges 4 of a first toothing are formed about a complete periphery of the working head 3, cutting edges 5 of a second toothing are formed additionally at sector-type partial regions of the working head 3, and sector-type regions are provided at a front face 6 of the working head 3, in which the cutting edges 4, 5 of the first and second toothing end alternatingly in the circumferential direction.

Abstract: A dental cutter includes a cutter head adapted for attachment to a shaft, the head being provided with a plurality of cutting edges, the cutter head including two cross-cuts which are respectively formed helically at the cutter head, wherein the two cross-cuts extend with an opposite twist.