Abstract: A superstructure is included together with other components in a tooth prosthesis system, by means of which a tooth prosthesis is intended to be applied to a patient in a short application time, for example in one or only a few days. The superstructure (1) is designed with a bearing part (1b) which can cooperate with fixture members, and a tooth-prosthesis-supporting part, and the parts are designed with recesses for said securing members. The bearing part and the tooth-prosthesis-supporting part are integrated over at least most of their horizontal extents by means of the parts being produced from a common blank or a material composition using a treatment or method which gives a user-friendly outer shape and bevels on the unit or superstructure forming the parts.

Abstract: A self-tapping implant for jawbone comprises a body (15) with threads arranged thereon, a conically tapering portion (12) arranged at its front end, and one or more spaces (4, 5, 6) which accommodate bone material cut off during tapping and which are formed by removal of material from the threads and body in question. Each materially reduced thread has a cutting edge (1a, 2a, 3a) which extends inwards from the outer edge of the respective remaining thread part and which can cooperate with the bone during tapping. Each cutting edge of a number of cutting edges has a pointed shape (1b, 2b, 3b) which, in the cross section of the thread in question, essentially follows a line which deviates from a radius (r) through the remaining thread part's front portion or the pointed shape's point (1b, 2b, 3b) in order in this way to form a cutting angle. Each cutting edge (1a, 2a, 3a) on a first remaining thread part (1, 2, 3) merges via a radius (r?) or curved part into a rear edge (e.g.

Abstract: An implant (1) which can be cooperate with an installation tool (24) and a spacer member (25, 26) and which is arranged with an internal recess which extends from the upper parts of the implant and opens upward, the recess being arranged with first tracks (5) and/or ridges which, seen in cross section of the recess, extend outward from the main periphery (3) of the recess, in which first surfaces (5a) of said first tracks (5) and/or ridges can cooperate with corresponding (opposite) second surfaces (8a) on second ridges (8) and/or tracks arranged on the tightening member (24).

Abstract: An arrangement including a spacer element operative to support a superstructure and including a first passage and a second passage. The second passage is operative to permit mechanical anchoring of the holder. A first screw is operative to screw the spacer element into an implant. During an initial stage of insertion the first passage is operative to receive the first screw such that a center axis of the first screw is inclined in relation to a direction of screwing of the first screw. During a final stage of insertion the first passage permits the first screw to tilt such that the center axis of the first screw substantially coincides with the direction of screwing. A holder is operative to hold the spacer element. The holder substantially prevents the first screw from leaving the position it has assumed during the final stage of insertion. A second screw is operative to screw the superstructure onto the spacer element.

Abstract: A self-tapping implant for use in a jawbone includes a body with plural thread spirals arranged thereon; a conically tapering portion arranged at a front end of the body and having one or more bone-chip recesses therein which accommodate bone material cut off during a tapping operation. The bone-chip recesses are formed by removal of material from the plural thread spirals and body. At least in the conically tapering portion, the plural thread spirals are materially reduced, and each of the materially reduced threads have a cutting edge which extends inward from an outer edge of a respective remaining thread part. Each cutting edge of a number of associated cutting edges of the materially reduced threads have a pointed shape which, in a cross section thereof, essentially follows a line which deviates from a first radius through a point of the pointed shape of the respective remaining thread part.

Abstract: A method for securing a spacer to an implant integrated in bone. A spacer and a screw are engaged with a holder in a rotationally fixed position with respect to the holder. The spacer is engaged in a spacer engaging portion of the holder and the screw is engaged in a screw engaging portion of the holder. The screw is inserted in a threaded receiving passage of the implant such that threads on the screw engage threads of the receiving passage. A rotational motion is applied to the holder, thereby rotating the rotationally fixed spacer and screw and screwing the screw into the receiving passage of the implant. A cooperation between a bearing surface of the spacer and a top surface of the implant is established at a predetermined position of screwing. The holder is separated from the spacer and the screw.

Abstract: A threaded implant for screwing into jawbone and supporting a spacer element in the screwed-in position is provided. The implant includes a socket arrangement which can cooperate with a tool for screwing in the implant. The socket arrangement also secures the spacer element in an applied position. The socket arrangement includes two separate sockets, of which the first socket can cooperate with the tool and the second socket permits rotational locking of the spacer element.

Abstract: A superstructure is included together with other components in a tooth prosthesis system, by means of which a tooth prosthesis is intended to be applied to a patient in a short application time, for example in one or only a few days. The superstructure (1) is designed with a bearing part (1b) which can cooperate with fixture members, and a tooth-prosthesis-supporting part, and the parts are designed with recesses for said securing members. The bearing part and the tooth-prosthesis-supporting part are integrated over at least most of their horizontal extents by means of the parts being produced from a common blank or a material composition using a treatment or method which gives a user-friendly outer shape and bevels on the unit or superstructure forming the parts.

Abstract: A system which provides a range of dental screws. The same screw tightener is used to tighten different screws, of different constructions. Each screw is provided with an internal recess which operates with the screw tightener. The recess has elements extending inward toward the center axis of the screw which cooperate with the screw tightener. Bearing capacity is provided by a wedging action between the screw tightener and recess, and a driving function occurs through actually extending elements within the recesses.

Abstract: A distance member is designed so as to make possible a cemented superstructure in the jaw and can be fastened to the implant in the jaw by means of a screw member. The distance member has a prefabricated external shape which is individually adapted to the respective dental situation in question for the purpose of rendering unnecessary substantial shape modification work in connection with construction of the superstructure in the jaw. The prefabricated shape has a shelf-shaped projecting part located between the upper and lower parts of the distance member and the distance member is designed with an internal counterholder which prevents torque being transmitted from the tool to the implant.

Abstract: An anchoring element to be screwed into a hole made in a jaw bone comprises a threaded part with a conical portion and one or more recesses in order to form a cutting edge in each recess. Thread-turn parts starting from each cutting edge are lowered vertically at the rear where they merge with a relief arranged at a distance from each cutting edge. The relief surface is arranged on the conical portion where it extends essentially parallel to a plane tangential to the conical portion.

Abstract: A spacing member for a securing element (fixture) permanently anchored in the jawbone. The spacing member comprises a substantially sleeve-shaped spacing element to be fitted on the securing element and a separate spacing screw. The spacing screw has an elongate, unthreaded middle portion and a threaded portion at its tip for engaging with an internally threaded bore in an upper part of the securing element. The sleeve-shaped spacing element includes a passage extending longitudinally therethrough for receiving the spacing screw. The passage has an internally threaded portion for engaging with the spacing screw, so that the spacing screw, after it has been threaded through the threaded portion, is joined together with the spacing element, and a recess in an upper part of the passage.

Abstract: A depth-marking system for use in connection with forming holes for receiving implants in a jawbone. The implants have a nominal length less than an actual length. At least one band marking is arranged on a tool for forming or measuring the implant holes. The at least one band marking includes a first line that indicates the actual hole depth, the actual depth including any lower cone-shaped portion of the hole. The at least one band marking also includes a second line above the first line that indicates a position of an uppermost of a unit arranged on the implant when the implant is in a final position in the hole and the unit is arranged in a final position on the implant.

Abstract: The invention relates to a spacing member for a tooth implant, comprising a base portion for attachment to a fixture implanted in the jawbone, and an upper part with an essentially conical outer limit surface for attachment to a tooth prosthesis. The base portion comprises a through hole for a spacing screw which is intended to engage with an internally threaded bore in the upper portion of the fixture and thereby form a first screw connection for locking the spacing member securely in a defined direction of deflection in relation to the fixture. The upper part comprises a second screw connection for attachment of the tooth prosthesis, which screw connection forms a fixed angle .delta. in relation to the first screw connection.

Abstract: This method increases the precision of the components in an impression system for dental prosthesis of the type permanently anchored in the jaw by at least one securing elements implanted in the jawbone. Each of the securing elements is provided with a distance member whose upper part protrudes above the palatal arch and on which the finished dental bridge/dental prosthesis is then anchored via a so-called gold cylinder. The system includes impression components in the form of impression tops and distance dummies with continuous guide holes and stop members for a guide pin which, during fixing of the components, is guided through the respective guide hole and engages with the stop members of the respective impression component. That part of the guide pin which interacts with the stop members of the guide holes of the respective impression component has a conical stop surface, while the stop members form plane surfaces and guide edges.

Abstract: A screw-shaped titanium anchoring member for permanent anchorage in bone tissue, specifically permanent anchorage of artificial teeth or tooth bridges in the jaw-bone, comprises at least one cavity located at the forward tip of the screw, the edges of the at least one cavity on the outer threaded cylindrical surface forming cutting tooth with cutting edge to provide self-tapping when the anchoring member is screwed into a bored hole in the bone tissue and the total volume of the at least one cavity being adapted to contain the scraped-off bone tissue material. The anchoring member on the outer cylindrical surface of the cutting tooth, a short distance behind its cutting edge, is provided with a clearance surface defined on the outer surface of the anchoring member, which when seen in a cross-section through the cutting part of the anchoring member, is slightly bevelled a short distance behind the threaded cutting edge.

Abstract: The invention relates to a cylinder 1 designed to be inserted in a temporary, implant-supported dental bridge/dental prosthesis,, a so-called temporary cylinder, and which comprises an upper part 2 which is surrounded by the dental bridge/dental prosthesis and a base section 4 for connection to the spacer element 6 of the implant. The cylinder is made of a polymer material and the upper part 2 has a conical outer contour.

Abstract: A device made of a tissue-compatible material is intended to temporarily cover a spacer of a dental implant during a period of incorporation of the dental implant, preferably in a single-tooth replacement. The base section of the device is designed in such a way that it guides the healing of the mucous membrane to assume a contour such that securing of the final crown is facilitated, and a certain possibility of controlling the seam between the final crown and the spacer is afforded. The device is preferably made of an elastic material for good clamp fitting on the spacer, as a result of which the use of paste, dental cement or the like is eliminated.