Abstract: The present invention relates to compositions and methods of use of materials in dental restoration, more specifically to the combined use of ethylenediaminotetraacetic acid (EDTA) and sodium hypochlorite to prepare a mechanically prepared tooth for crown replacement or for filling a cavity.

Abstract: Kit for use in restructuring a tooth by attaching a crown replacement on an endodontically treated tooth. A plugger is provided to heat and remove gutta percha, a burr to prepare a site consisting of a bore and counterbore, and at least one drill for final preparation of the bore. A post is provided corresponding in size to the drill and a chelating agent for flushing the site. An organic flushing agent is provided for flushing the site, as well as a cementing agent consisting of an unfilled resin and catalyst for application to the site within which the post is seated. A spiral apparatus is provided for the said application of the cementing medium in the prepared site and a composite resin is provided to fabricate a core and a crown form around the post.

Abstract: The invention herein comprises methods and products for attaching a crown replacement on an endodontically treated tooth. The superior surface of the tooth is shaped to receive the base of the crown replacement and an interior space is machined into the root canal to accept placement of a post. The instrumented area is then flushed with a chelating agent followed by an organic solvent. A cementing medium having great compressive strength is placed around a post fitted into the cavity. After the cement has set, a quantity of filler material is placed around the remaining exposed part of the post. This post forms the support for the crown replacement. If desired, a preformed crown replacement may be placed over the cemented structure until a permanent crown can be made.

Abstract: Apparatus and method for applying a core and crown to a tooth having a cleaned-out root canal, including a threaded post having a nut threaded on and positioned therealong.

Abstract: A device and procedures for endodontic therapy. An elongated flexible tubular member having a plurality of axially directed orifices formed in the distal end thereof has the proximal end thereof adapted to be connected to a source of supply of liquid. The liquid may be chemically active against necrotic tissue such as a solution of sodium hypochlorite. The distal end of the device is inserted into a root-pulp channel during a root canal procedure and liquid is delivered laterally against the walls of the channel thereby performing a mechanical scrubbing action and providing chemical action. The distal tip of the tubular member is closed off so as to prevent any liquid being expressed directly upon the root apex.

Abstract: An improved syringe is provided for root canal applications comprising a generally cylindrical or polygonal hollow barrel threaded internally at its distal end and at its proximal end, and a plunger which is substantially coextensive in length with and is adapted to slide through the cylinder. The plunger is closed face at its distal end and is externally threaded at its proximal end for threaded engagement with the internal threads at the proximal end of the cylinder. The plunger is integrally capped at its proximal end and the cap is provided with a handle for turning the plunger in order to insert it in or retract it from the cylinder. A needle is integrally attached to a hub which is provided with a central externally threaded tubular member adapted to threadedly engage with the internal threads of the distal end of the cylinder.

Abstract: A spoon excavator for administering a solution of N-monochloroglycine or other N-haloamine or like solution for effecting and facilitating dissolution of dental caries. The spoon excavator has a tubular shaft connected to a source of solution and a tip portion flattened and shaped to provide a generally spoon-like configuration for facilitating caries removal.