Institut Straumann Ag

Vincenzo Grande

Franz Sutter

Roger Tschirky

Ulrich Mundwiler

Francis J Sutter

Reto Baumgartner

Alex Sch&auml;r

The invention relates to a connection between a known dental implant ( ) and a straight or angular abutment ( ) which can be established by means of a base screw ( ) and a support ring ( ). The support ring ( ) is fixedly introduced into the inlet of the abutment ( ) near the lower edge of same, preferably by welding or by bending over of the lower edge of the abutment ( ). Before insertion of the support ring ( ) the base screw ( ) is introduced head first into the inlet ( ) from the side of the root part of the abutment. The base screw is held in the abutment ( ) by the support ring ( ) on which the base screw ( ) rests. The threaded shank ( ) of the base screw ( ) engages the inner thread ( ) provided for in the implant ( ) and draws the abutment ( ) into the receiving hole ( ) of the implant ( ). An angled surface of the base screw ( ) and a beveled surface of the support ring ( ) contact each other so that the welding seam or bent over lower edge of the abutment ( ) are relieved of axial stress. The above connection system is designed especially for implants ( ) with a conical receiving hole ( ) and internal polygon as well as abutments ( ) having a complementary external conical shape and external polygon.

Connection between a dental implant and an abutment

Impression system for an end of an implant projecting from a human

Connector between an implant and an abutment

The device (1) for forming a dental prosthesis has at least one support (3) with a base (4) which in the use of the device (1) is inserted into a jawbone (13) of a patient or into a jaw model. The support (3) has a conical bearing surface (4n) and also a shoulder (7e) which faces the base (4) and for example is formed by a flank of an annular groove (7d). The device (1) has for the or each support (3) a cap (8) which bears with a conical countersurface (8f) on the conical bearing surface (4n) of the support (44) when the device (1) has been assembled. The cap (8) has a hole (8k) with an internal thread (8m) and with an axis (11) which forms an angle with the axis (10) of the two conical surfaces (4n, 8f). A screw (9) screwed into the hole (8k) engages with a tapering end section (9b) on the outer border (7f) of the shoulder (7e) and thus presses the countersurface (8f) against the bearing surface (4n). The end section (8b) of the cap (8) facing away from the base (4) is hole-free and therefore makes possible favourable and aesthetic shaping of the cap (8).

Device for forming a dental prosthesis and method of manufacturing such

Growing community of inventors

Mohlin, Switzerland

Vincenzo Grande