CAP FOR FASTENING ON AN ANCHORING ELEMENT

Abstract

A cap for fastening a denture on an anchoring element has a projecting part pointing radially inwards which co-operates with a circumferential groove on the anchoring element, thus forming a retention element such that the cap can be releasably fastened on the anchoring element. The cap has a conical end portion located below the retention element, the end portion at least partially surrounding, in the fastened state, a corresponding outer surface of the anchoring element.

Claims

1. A cap for attachment of a dental prosthesis onto an anchoring element (VE), wherein the cap (KA) has a projection (VO) that is directed radially inward, which projection interacts with a circumferential groove (NU) on the anchoring element (VE) as a retention element (RE), so that the cap (KA) can be releasably attached to the anchoring element (VE), and the cap (KA) has an end portion (AB) disposed below the retention element (RE), which at least partially surrounds a corresponding outer surface (AF) of the anchoring element (VE) in the attached state.

2. The cap according to claim 1, in which the cap (KA) is releasably attached on the anchoring element (VE) by means of a matrix (MA) produced from a resiliently elastic deformable material.

3. The cap according to claim 2, in which the matrix (MA) is made of plastic.

4. The cap according to claim 1, in which the end portion (AB) is configured in the form of a truncated cone or in the form of a cylinder.

5. The cap according to claim 1, in which the outside of the cap is configured in the form of a bollard.

6. The cap according to claim 1, which has rotation symmetry along an axial direction.

7. The cap according to claim 1, in which the projection (VO) that is directed radially inward and the circumferential groove (NU) are adapted to a pull-off force with regard to their dimensions.

8. The cap according to claim 1, wherein the cap is produced from metal or plastic.

9. The cap according to claim 1, wherein the anchoring element is part of an implant or root pin.

Description

[0026] The invention will be explained in greater detail in the following, making reference to the drawing. The drawing shows:

[0027] FIG. 1 a cap according to the invention, in a side view, in an attached state.

[0028] In the FIGURES, elements that are the same or have the same effect are provided with the same reference symbols.

[0029] In FIG. 1, an embodiment of a cap KA according to the invention is shown. The cap KA is attached onto an anchoring element VE, wherein a projection VO directed inward, on the cap KA, interacts with a groove NU on the anchoring element VE as a retention element RE. A matrix MA produced from elastically deformable material, typically a plastic material, is affixed between cap KA and anchoring element VE. Below the retention element RE, the cap KA has a conical end portion AB, which covers a corresponding outer surface AF of the anchoring element VE in the attached state.

[0030] Thereby, in the attached state that is shown in FIG. 1, the cap is not only held in the retention element RE but also additionally stabilized to prevent tilting, by way of the interaction of the conical end portion AB and the corresponding outer surface AF. In this regard, the outside of the cap KA can be configured in the form of a bollard, wherein the constriction that is typical for bollards can be formed in simple manner, in the region of the projection VO that is directed inward. Aside from a conical end portion AB, it would also be possible to provide a cylindrical geometry at this location.

[0031] The cap KA is provided as an attachment for a dental prosthesis (not shown in FIG. 1), so that a releasable connection with the anchoring element VE is created, as is desirable in the case of a removable dental prosthesis. The pull-off force can be determined by means of the dimensioning of the projection VO and its interplay with the groove NU or by means of the selection of the matrix material MA, so that different values can be achieved. The cap KA for attachment of a dental prosthesis is shown in an attached state on the anchoring element state in FIG. 1. In this regard, it should be emphasized that the cap KA can be pulled off upward in the axial direction. In this regard, the anchoring element VE can be part of an implant or of a root pin. Typically, metal or plastic is selected as the production material for the cap KA. It is advantageous if the cap KA is configured with rotation symmetry along the axial direction of the anchoring element VE.

[0032] The cap KA shown in FIG. 1 can, however, also be part of a dental prosthesis arrangement, and in this case would form an inner surface of the dental prosthesis.

[0033] Because of the simple structure, the cap KA allows a cost-advantageous attachment possibility for dental prostheses, wherein reliable attachment is achieved by means of the retention region RE, and securing to prevent tilting is achieved by way of the corresponding surfaces of the superimposition, in the form of a truncated cone, of cap KA and anchoring element VE, in the region of the end portion AB.

[0034] The characteristics indicated above and in the claims, as well as those that can be derived from the FIGURES, can be advantageously implemented both individually and in various combinations. The invention is not restricted to the exemplary embodiments described, but rather can be modified in many ways, within the scope of the ability of a person skilled in the art.