Abstract: A dental implant includes a fixture implanted into an alveolar bone, an abutment fixed to an upper part of the fixture and having a core hole formed in a center of an upper surface of the abutment, a crown bonded to an upper outer side of the abutment and having a passage vertically formed through a center of the crown, and a cover screw having a screw screw-fastened to the core hole and a head in close contact between an upper surface of the abutment and a lower surface of the crow to cover the core hole, in which, when the screw is released by a tool passing through the passage, the head moves up so that the cover screw provides a separating force to the crown. The dental implant may facilitate a separation of the crown and prevent binding force from weakening, thereby enabling an efficient procedure and management.

Abstract: A cemented dental crown removal system is provided having a base implant, an abutment, and a dental crown having a passageway with a sleeve with one or more female threads. The sleeve is in juxtaposition to the abutment. The sleeve accommodates a fastener element or a tool having one or more male threads that are positioned against the abutment. A method of removing a cemented dental crown is provided.

Abstract: Method for extracting an implant installed in a bone, which comprises the application of a torque on an extraction tool in order to thread it in the interior of the implant until the implant-bone connection is broken, with the specific feature that the torque is applied in phases. In each phase a torque that is increasingly greater than in the previous phase is applied and the application of torque is then eased. This method brings about a gradual and controlled deformation of the head of the implant, with the result that the extraction tool is inserted more deeply into the implant. As a result, higher breakage torques may be applied without damage being caused to the extraction tool.

Abstract: A method for the production of a dental implant with a post part which can be introduced into a jawbone and with a mounting part assigned thereto, on which a dental prosthetic piece can be mounted, is to allow the dental technician to perform a simple indexing of the mounting part while drawing on current procedural steps. For this purpose, the apical end of the mounting part is shaped in order to adapt the external cross-section of the mounting part to the internal cross-section of the post part.

Abstract: The invention is an extractor for roots of broken teeth. This extractor has a square head spiral. That square head spiral has a spiral anchor and a square head with optional depressions in the sides of that square head. In that square head opposite the spiral anchor is a threaded hole. Included is a generally cubical square head socket with a lower square opening. There is a centrally located passage through the top of that generally cubical square head socket. The invention also has a thumb screw device with a rotator knob part and a threaded section. In operation the square head spiral anchor is screwed into the patient's broken tooth and the cubical square head socket is placed over the square head. The rotator knob part is threaded into the square head threaded hole. The extractor for roots of broken teeth is ready to remove the root of the broken tooth. The square head socket may have an extension. The invention includes a process for removing roots of broken teeth using the above device.

Abstract: The invention relates to a device (1) for extracting a tooth root, said device having a pin (2) which can be inserted and fixed in the tooth root (10). The pin (2) can be fixed to the front end of a unit (5) via a connection piece (3). The unit (5) can transfer an impact force to the pin (2) in the direction of extraction (A). The device enables an especially simple operation, without clearance problems or danger of injury in the mouth area, particularly on account of the good access to the tooth root provided by the connection piece, which is designed as a thin connection rod.

Abstract: A compact, easily transportable dental system to permit root and root tip extractions from human and animal patients including those who are unable to visit an oral surgeon or veterinarian at a traditional office. An extraction bur having a lifting ball is embedded within and stands upwardly from the root or root tip to be extracted. The extraction bur is detachably connected to and rotated into the root/tip by a bur implanting device. A bur ejector is slidable through the bur implanting device to cause the extraction bur to be released therefrom once the bur has been implanted in the patient's root/tip. A universal fulcrum tray covers the root/tip and surrounds the patient's adjacent teeth during the extraction process. The upstanding extraction bur and the lifting ball thereof project through one of a pair of slots formed in the universal fulcrum tray.

Abstract: An implant fixture remover is provided which includes: a remover screw including a coupling screw portion screwed to a female screw portion of a fixture, and a separating screw portion formed to extend from one end of the coupling screw portion to the outside of the fixture and having a thread formed on the outer circumferential surface thereof; and a remover driver including a separating female screw portion into and to which the separating screw portion of the remover screw is inserted and screwed and in which a thread corresponding to the separating screw portion is formed in the inner circumferential surface thereof, a close coupling portion formed at the lower end of the separating female portion 22 and coming in frictional contact with the upper outer surface of the fixture, and a shank which extends upward from the separating female screw portion and in which a fastening tool is connected to the outer circumferential surface of one end thereof.

Abstract: The invention relates to an arrangement for insertion of an implant, in particular of a dental implant, which has an external thread and can be screwed into a bone by means of a tool, wherein the implant has a receiving opening with an at least partially conical inner face. A pin of an attachment part, which can be connected to the implant after the latter's insertion, can be fitted into the receiving opening. The arrangement is to be further developed such that the insertion of the implant can be performed in a simple and yet functionally reliable manner.

Abstract: This application relates to the field of Dentistry, and in more particular to the atraumatic extraction of teeth. The instant invention is a wedge-shaped extraction rod to be inserted into a pre-drilled root. With a wider than thick configuration, the wedge-shaped rod allows the controlled introduction of both clockwise and counterclockwise torque around the vertical axis of the root to induce dislodgment from the natural socket seating, before the subsequent vertical removal of the root.

Abstract: The invention relates to a method for extracting a root, whereby the root is extracted following a possible initial loosening of the root within the periodontal gap. A pin is inserted into the root and affixed there, whereafter a pulling element functionally linked with a tensioning device is connected with the pin. The pulling force required for extracting the root is subsequently applied to the root substantially in the direction of the axis of the tooth by means of the tensioning device that has been partially inserted into the mouth and supported there.

Abstract: An endodontic instrument extractor tool is configured for removing a fragment of a broken endodontic instrument that has become lodged within a root canal of a tooth. The extractor tool comprises an elongate shaft, including a hollow gripping body at a distal end, and a proximal handle portion. The hollow gripping body includes an inside diameter that is initially greater than a cross-sectional dimension of a fragment of a broken endodontic instrument to be removed from a root canal of a tooth. The inside diameter of the hollow gripping body defines a hollow interior cavity portion into which at least a portion of the fragment is receivable. At least the hollow gripping body of the body is formed of a shape memory alloy (e.g., nickel-titanium) or polymer in an expanded configuration so that upon heating, the shape memory alloy or polymer returns to its unexpanded configuration, tightly gripping around a proximal end of the fragment.

Abstract: The invention is an extractor for roots of broken teeth. This extractor has a square head spiral. That square head spiral has a spiral anchor and a square head with optional depressions in the sides of that square head. In that square head opposite the spiral anchor is a thread hole. Included is a generally cubical square head socket with a lower square opening. There is a centrally located passage through the top of that generally cubical square head socket. The invention also has a thumb screw device with a rotator knob part and a thread section. In operation the square head spiral anchor is screwed into the patient's broken tooth and the cubical square head socket is placed over the square head. The rotator knob part is threaded into the square head thread hole. The extractor for roots of broken teeth is ready to remove the root of the broken tooth. The square head socket may have an extension. The invention includes a process for removing roots of broken teeth using the above device.

Abstract: A divice for the removal of teeth and/or tooth roots from a tooth socket or from a jawbone includes an extractor having a fisrt and second lever and a first and second branch pivotably connected to each other by a hinge, the first branch including a receiving part. A rod for mechanically and manually adjusting the first and second levers is provided. An adjusting part for axially moving the rod relative to the second lever against a force needed to extract a tooth is provided. An extracting part including at least one resistance element is provided for anchorinf the tooth or a tooth stump, the extracting part including a first support for coupling with the receiving part of the first branch. A second support is placed against the extractor and has an openning for the extracting part.

Abstract: The invention relates to a device (1), for the removal of teeth and/or tooth roots from the tooth socket, or the jawbone, by means of a pincer-like drawing device (2), comprising a first and a second lever arm (42). The first lever arm can be supported by means of a support (9), on the jawbone ridge (8) or the tooth upper part or tooth crown (7) and the support (9) comprises at least one opening (10) for a drawing piece (11) which may be connected to a connector element on the second lever arm. The two lever arms may adopt an opposing position and displaced away from each other on operation of the lever, thus moving the drawing device.

Abstract: An extraction device for extracting some or all of a tooth from a patient, such as the root of the tooth. One embodiment of the device includes an extraction bit having helical windings without a linear core portion separate from the windings, and in that manner is distinguishable from a common screw. The extraction bit may include a partial-spiral flute or groove formed in a tip thereof. A lockable and releaseable hand piece for attaching to the extraction bit provides leverage to the user for dislodging the tooth root, and is reversible in its attachment position to the extraction bit.

Abstract: A dental tool apparatus for use in the removal of a dental post and other intercanal obstructions comprises a pliers having a first end for mounting a post connector and a second end for applying a force to the connector a substantially elongate post connector defined by a shaft having a proximal for attachment to a lever device, and a distal end having an open bore having a stepped diameter and self taping threads in the bore at the end for engaging and threading onto a dental post.

Abstract: A method and apparatus for restoration of teeth using light curable restoratives while assuring interproximal contact between the restored tooth and an adjacent tooth. The apparatus is in the form of a hand-held instrument with a specialized tip to hold an amount of pre-cured composite which is made from the same material as the restorative material or other compatible material and is intended for permanent placement in the tooth during the restorative process and becomes an integral part of the restoration. A tooth cavitation opening through a vertical tooth surface about which a matrix band has been tightened is filled by alternate deposition and curing of successive layers of the light curable restorative to a level at or below the plane of maximum circumference of the tooth. The amount of pre-cured composite is placed in a layer of uncured composite on this plane and the instrument is used to apply pressure to the amount of pre-cured composite to establish interproximal contact.

Abstract: An instrument for removing dental bridgework is disclosed. The instrument includes a support beam for extending into a patient's mouth over bridgework bonded therein; one or more bracing pins; and pulling means for drawings a pulling cord or cords looped beneath the bridgework in an occlusal direction towards the beam. In one structure, the bracing pin or pins have lower ends receivable by a hole or holes cut in the occlusal surface of a retainer or retainers forming part of the bridgework. In another structure, the lower end of a bracing pin has a protective footing for bracing against the exposed cusp of a tooth.

Abstract: A removal dental crown adapted to be secured by a layer of bonding material to a tooth. The crown has a removable key threadedly secured in a channel formed directly in the crown. The key includes a recess for receiving a tool for removal of the key thereby leaving a threaded channel in the crown. An extractor tool can then be inserted into the threaded channel for engagingly breaking the bonding layer and forcing the crown away from the tooth.

Abstract: Dental elevator comprising a holder portion (3), a stem portion (5) and a beak portion (7), the improvement is characterized in that the beak portion has an extremity (a) thereof formed in a shape selected from a group consisting of a U-shape, a V-shape and a zigzag or serrated shape. Due to such construction, the dental elevator can easily extract a tooth efficiently utilizing a lever action and a wedge action.