Abstract: A surgical coupling device for releasably connecting a handpiece to a surgical instrument, the handpiece being provided with a recess into which a coupling portion of the instrument can be detachably slid, an interior wall of the recess having formed thereon a locking recess with which a snap-in element can be brought into detachable engagement, the snap-in element being supported on the instrument, wherein the snap-in element is formed on a latch element which extends substantially in axial direction and which is radially shiftably supported on the instrument and which is biased by at least one elastic element radially outwards into an inoperative position, the latch element being movable by an actuating element against the bias of the elastic element into a release position.

Abstract: The invention relates to a root canal instrument set comprising at least two root canal instruments, each root canal instrument being provided with a collar having a shaft end at one end and a working part including at least one cutting edge on the other end, the working part being shaped conically or crowned, wherein the cone angle of the working parts decrease from the preceding root canal instrument to the subsequent root canal instrument and the working part of the respectively preceding root canal instrument has a larger diameter than the working part of the respectively subsequent root canal instrument. Alternatively, the radii of the crowned working parts may increase from the preceding root canal instrument to the subsequent root canal instrument, and the working part of the preceding root canal instrument may have a larger diameter than the working part of the subsequent root canal instrument.

Abstract: The invention relates to a surgical saw blade having a flat, plate-shaped body (1) being provided with a toothing (2) at least one edge portion, said toothing comprising a plurality of uncrossed teeth, said teeth each consisting of groups comprising three teeth (3, 4, 5) of different shape, or wherein the toothing (2) comprises pairs (5, 6) of two teeth (3, 4) being arranged symmetrically to each other in relation to a plane perpendicular to the center plane of the body (1).

Abstract: The present invention relates to a surgical saw blade comprising a clamping portion and a working area provided with a toothing, wherein a plurality of recesses are formed in the working area.

Abstract: The present invention relates to a method of producing a surgical saw blade comprising a clamping portion and a working area provided with a toothing, wherein the clamping portion and the working area are produced by means of an etching method and the toothing is subsequently cut by means of a laser type cutting method.

Abstract: The present invention relates to a dental tool, in particular for grinding teeth, comprising a grinding head and a rotatingly drivable shaft, the grinding head being provided on its surface with at least one elevated portion which, during rotation of the grinding head works a surface to be prepared and defines a circle of rotation. The invention is characterized in that the elevated portion comprises an edge, and the edge is the side line of a surface that is situated at least at the leading side of the edge and that is retracted relative to the circle of rotation defined by the edge.

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.