Abstract: The present invention provides novel methods and kits for removing unhealthy or necrotic pulp tissue from inside the root canals of a tooth, and to replace it with new vascularized tissue created by regenerative endodontic treatment. The present invention provides alternatives to current root canal therapies, as well as obturation of the root canal with dental materials.

Abstract: A labelling device for electrical terminal blocks is characterized by a unitary labelling element including a base portion which can be connected with the insulated body of the block and a tag portion connected with the base portion in a swingable manner via a strap hinge. When the tag portion is folded to the closed position, it is connected with the base portion via a pin and aperture press-fit connection. The labelling device can be manufactured in a simple manner with a narrow design and reliably retained in the closed position, whereby it also functions to cover the access openings of the terminal block.

Abstract: A connector for electrically connecting a row of electrical clamps with one another includes an electrically conductive connecting strip which is designed to span the clamps and to define gaps with the electrical contacts of the clamps. The connecting strip is of one piece with a plurality of bridging members which are designed to bridge the gaps between the connecting strip and the contacts of the clamps. The bridging members are L-shaped and include long legs which project from the connecting strip and short legs which extend from the long legs and are arranged to engage the contacts of the clamps. The short legs have openings which receive screws for connecting the short legs with the contacts. The heads of the screws are embraced by retaining sleeves which prevent displacement or loss of the screws. The retaining sleeves have openings to permit insertion of a screwdriver for tightening and loosening the screws. The diameters of these openings are smaller than the diameters of the heads of the screws.

Abstract: A cross connection link which can establish several electrical connections between an elongated strip-shaped conductor and one or more bus bars in the recess of a terminal block has a series of neighboring L-shaped or U-shaped metallic distancing elements each of which has a leg connected with an edge portion of the strip-shaped conductor by a weakened joint so that it can be readily broken off the strip-shaped conductor, and a web which is integral with the other end portion of the leg and has an aperture for the shank of a screw serving to connect the web with a bus bar. The heads of the screws are adjacent to those sides of the webs which face the strip-shaped conductor, and such heads are confined against movement away from the regions of the respective webs so that they are always ready for engagement by the working end of a tool which is used to move the shanks of selected screws or all screws into mesh with tapped holes in the bus bar or bars.

Abstract: A support for an electrical busbar, made of plastic material, has a recess for holding a busbar. The lower surface of the recess is a resiliently flexible plate supported in the middle by a rib and provided with projections at opposite sides. Adjacent to the mouth of the recess is a resilient detent arm. When a busbar is inserted, it depresses the arm and at least one of the projections by flexing of the plate. The stress in the plate clamps the busbar in the recess, and the arm snaps into place behind the inserted busbar. One of the projections may serve as an end stop for the busbar, if the support is placed at the busbar end. This form of support is easy to manufacture and to use, and provides very reliable clamping and location of the busbar.