Abstract: The impression jig comprises a main body having an inner channel and a head having an inner channel and adapted for being releasably attached to said main body, wherein the inner channel of the main body is provided with threads and at its lower end portion, with an inner positioning surface, and wherein the inner channel of the head is provided with threads and at its upper end portion, with an inner positioning surface. The impression jig further comprises a tubular screw adapted for guiding through the inner channel of the main body and the inner channel of the head, said tubular screw having an inner channel, and wherein the outer surface of the tubular screw is provided with first threads at an upper section thereof and with second threads at a predetermined distance from a lower section thereof.

Abstract: Structure enabling continuous angular adjustment for fixing a single dental device to an implant. The structure is formed from a ringwise tiltable threaded shank and a fixing unit for fixing the threaded shank to the implant. The fixing element is formed from an insertion piece and an intermediate piece. The lower end of threaded shank is placed between the end of the insertion piece and the upper end of the intermediate piece. A fixing nut is mounted on the threaded shank. The intermediate piece and the insertion piece are secured to each other by a joining element. The joining element is provided with lower corners and upper corners. A coupling body is installed on the joining element. A mould or the frame is fixed to the coupling body by the fixing nut.

Abstract: The impression jig comprises a main body having an inner channel and a head having an inner channel and adapted for being releasably attached to said main body, wherein the inner channel of the main body is provided with threads and at its lower end portion, with an inner positioning surface, and wherein the inner channel of the head is provided with threads and at its upper end portion, with an inner positioning surface. The impression jig further comprises a tubular screw adapted for guiding through the inner channel of the main body and the inner channel of the head, said tubular screw having an inner channel, and wherein the outer surface of the tubular screw is provided with first threads at an upper section thereof and with second threads at a predetermined distance from a lower section thereof.

Abstract: A dental superstructure defines a channel formation for the fixing element of a dental superstructure. The superstructure (1) is fixed to an implantation (3) integrated in the jaw bone by means of a fixing element (2). A channel (7) is formed in the superstructure (1). The axis line (8) of the channel (7) is shaped to follow an arc (9) whose radii pointing to given points of the axis line (8) diverge from the plane of the arc (9) by 0-5°. The channel (7) is shaped in such a manner that the sections determined by the planes perpendicular to its axis line (8) are circles with the same diameter with their centers on the axis line (8). In the method according to the invention a computer controlled device is used for forming the channel.

Abstract: Structure enabling continuous angular adjustment for fixing a single dental device into an implant. The structure is formed from a ringwise tiltable threaded shank projecting from the implant and a dental device fixing unit comprising a fixing element for fixing the threaded shank to the implant. The fixing element is formed from an insertion piece and an intermediate piece. The lower end of threaded shank is placed between the end of insertion piece and the upper end of intermediate piece. A fixing nut is applied on the threaded shank. The intermediate piece and the insertion piece are secured to each other by means of a joining element placed in implant. The joining element is provided with lower corners and upper corners. A coupling body is installed on joining element. The mould or the frame is fixed to the coupling body by means of the fixing nut.

Abstract: A dental superstructure and a method of forming a curved channel therein for a fixing element by using a computer-controlled device. A dental superstructure is fixed, preferably through an intermediate piece (interface), to a dental implant integrated in the jaw bone by means of a fixing element (typically a screw) through an outlet provided with a shoulder. To allow the insertion of the fixing element, a channel is formed in the superstructure between an inlet formed in the superstructure at its side facing the oral cavity and the shoulder of the outlet. The outlet having a diameter corresponding to a threaded part of the fixing element is usually formed in a separate working process.

Abstract: Dental device fixing unit (3) which can be secured resiliently into a dental implant enabling optional angular position adjustment comprising a threaded shank (4) tiltable in all direction projecting from the implant (2) and a fixing element (5) for securing the threaded shank (4) to the implant (2). The fixing element (5) consists of an insertion piece (6) and an intermediate piece (7) provided with a bore-hole (14) in which the threaded shank (4) is led through in order to secure the insertion piece (6) to the implant (2). The end (9) of the insertion piece (6) and the inner end (8) of the threaded shank (4) are attached to each other in a swivelable manner. The inner end (8) of the threaded shank (4) is positioned between the end (9) of the insertion piece (6) and the upper end (13) of the intermediate piece (7).

Abstract: Channel formation for the fixing element of a dental superstructure. The superstructure (1) is fixed to the implantation (3) integrated in the jaw bone by means of a fixing element (2). A channel (7) is formed in the superstructure (1). The axis line (8) of the channel (7) is shaped to follow an arc (9) whose radii pointing to given points of the axis line (8) diverge from the plane of the arc (9) by 0-5%. The channel (7) is shaped in such a manner that the sections determined by the planes perpendicular to its axis line (8) are circles with the same diameter with their centres on the axis line (8). In the method according to the invention a computer controlled device is used for forming the channel.