# US 10,117,730 B2 · Dental implant with a ceramic superstructure and base body

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- Number: US 10,117,730 B2
- Document ID: US10117730B2
- Status: Granted
- Kind: B2
- Application number: 14/085,587
- Filed: 2013-11-20
- Published: 2014-05-29
- Granted: 2018-11-06
- Earliest claimed: 2012-11-23
- Assignees: Lakeview Innovation Ltd.
- Applicants: Lakeview Innovation Ltd.
- Inventors: Thorsten Buurlage
- Web page: https://patentgrep.com/patent/US10117730B2

## CPC

- A61C 8/0068: {with an additional screw}
- A61C 8/0012: {characterised by the material or composition, e.g. ceramics, surface layer, metal alloy (use of specific materials A61K6/00)}
- A61C 8/0066: {with positioning means (A61C8/006 takes precedence)}
- A61C 13/0006: {Production methods}
- A61C 13/206: {Injection moulding}
- A61K 6/818: comprising zirconium oxide
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)

## Abstract

Dental implant with a base body made of ceramic anchorable in a jawbone and an implant superstructure attachable to the base body using a screw, wherein in an assembled state of the dental implant, a threaded portion of the screw engages with an inner thread formed in a blind hole of the base body, wherein the implant superstructure is by the screw pressed against the base body and wherein the engagement between the threaded portion of the screw and the internal thread of the blind hole occurs only in a lower half of the base body facing away from the implant superstructure.

## Claims

### Claim 1

Dental implant comprising:
a base body, made of a single ceramic piece, and anchorable in a jawbone, comprising a blind hole in said ceramic,
an implant superstructure attachable to said base body and contacting a bearing surface of said base body, and
a screw for attaching said implant superstructure to said base body, said screw comprising a smooth shank and a threaded portion,
wherein in an assembled state of said dental implant, said threaded portion of said screw engages with an internal thread formed in said blind hole in said ceramic of said base body, and
wherein said implant superstructure is by said screw pressed against said base body in an assembled state of said dental implant, wherein said engagement between said threaded portion of said screw and said internal thread of said blind hole occurs only in a lower half of said base body facing away from said implant superstructure,
wherein said internal thread has a length that extends only in said lower half of said base body,
wherein said blind hole comprises a bore, above said internal thread in the direction of said implant superstructure, which is embodied as a fit bore, such that an outer surface of said shank of said screw bears against an inner surface of said fit bore when inserted into said base body;
wherein the length of the base body extends from the bearing surface to an apical end of the base body; and
wherein said blind hole has a length that amounts to at least 80% of said length of said base body.

### Claim 2 (depends on 1)

The dental implant according to claim 1, wherein said fit bore has a length that is greater than a length of said internal thread.

### Claim 3 (depends on 1)

The dental implant according to claim 1, wherein said implant superstructure bears against the base body at a further bearing surface extending substantially perpendicular to a longitudinal axis of said screw.

### Claim 4 (depends on 1)

The dental implant according to claim 1, wherein said implant superstructure comprises an extension that is, in the assembled state of the dental implant, inserted into a recess of said base body.

### Claim 5 (depends on 1)

The dental implant according to claim 1, wherein there is an anti-rotation form fit between said implant superstructure and said base body.

### Claim 6 (depends on 1)

The dental implant according to claim 1, wherein both said implant superstructure as well as said base body are manufactured of ceramic material.

### Claim 7 (depends on 1)

The dental implant according to claim 1, wherein said implant superstructure or said base body, or both are manufactured by powder-injection molding methods.

### Claim 8 (depends on 1)

The dental implant according to claim 1, wherein the length of said blind hole amounts to at least 90% of said length of said base body.

### Claim 9 (depends on 6)

The dental implant according to claim 6, wherein said ceramic material is zirconium oxide.