US 5,667,384 A · Device for forming a dental prosthesis and method of manufacturing such a device

Abstract

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).

Claims23

Dependent claims

A device for forming a dental prothesis comprising:

a cap defining an inner space;
a support for supporting the cap, the cap and the support having a common, first axis;
and
a screw for fastening the cap on the support,
wherein the support has an inner end for being inserted in a jawbone of a dental prothesis user, and an outer part to be located outside of the jawbone for supporting the cap, the outer part having a bearing surface cooperating with a counter bearing surface of the cap in an assembled condition of the device,
wherein the cap has a threaded hole for receiving the fastening screw and opening into the inner space, the hole having a second axis extending at an angle to the first axis, and
wherein the screw has a tapering end section extending, at least partially, into the inner space and engaging a shoulder, which is provided on the outer part and faces the inner part, for generating a pressure force for pressing the counter bearing surface of the cap against the bearing surface of the outer part.

4 more elements

A method of manufacturing a device for forming a dental prothesis, comprising the steps of:

providing a cap defining an inner space;
providing a support for supporting the cap;
and
providing a screw for fastening the cap on the support,
wherein the support providing step includes providing a support having an inner end for being inserted in a jawbone of a dental prothesis user, and an outer part to be located outside of the jawbone for supporting the cap and having a bearing surface for cooperating with a counter bearing surface of the cap in an assembled condition of the device,
wherein the cap providing step includes providing a cap having a threaded hole for receiving the fastening screw and opening into the inner space and defining a second axis extending at an angle to a first, common axis of the support and the cap;
and
wherein the screw providing step includes providing a screw having a tapering end section for extending, at least partially, into the inner space and for engaging a shoulder, which is provided on the outer part and faces the inner part, for generating a pressure force for pressing the counter bearing surface of the cap against the bearing surface of the outer part.

5 more elements

Dependencies are inferred from the claim text.

Device for forming a dental prosthesis and method of manufacturing such a device

Life of this patent

Device for forming a dental prosthesis and method of manufacturing such a device

Life of this patent

Abstract

Claims23