Dental implant for a jaw with reduced bone volume and improved osseointegration features

• US 10,070,945 B2
• Filed: 10/30/2014
• Issued: 09/11/2018
• Est. Priority Date: 08/30/2005
• Status: Expired due to Fees

• Current Assignee: Zimmer Dental Inc. (Zimvie Incorporated)
• Original Assignee: Zimmer Dental Inc. (Zimvie Incorporated)
• Inventors: Collins, Michael Scott, Bassett, Jeffrey, Cahill, Sean
• Primary Examiner(s): LEWIS, RALPH A
• Application Number:
  US14/528,020
• Publication Number:
  US 20150056573A1
• Time in Patent Office: 1,412 Days
• CPC Class Codes: A61C 2008/0046 Textured surface, e.g. roughness, microstructure A61C8/0013 takes precedence
• CPC Class Codes: A61C 8/0012 characterised by the material or composition, e.g. ceramics, surface layer, metal alloy use of specific materials A61K6/00
• CPC Class Codes: A61C 8/0013 with a surface layer, coating
• CPC Class Codes: A61C 8/0022 Self-screwing A61C8/0028 takes precedence
• CPC Class Codes: A61C 8/0075 Implant heads specially designed for receiving an upper structure if separable from the implant A61C8/005
• CPC Class Codes: A61K 6/84 comprising metals or alloys

Abstract

A dental implant has a body with a porous metal portion for engaging bone. The porous metal portion has an outer coronal to apical height and an outer diameter. Both the height and diameter are about 4 mm to about 6 mm. This permits the implant to be placed on a jaw with a reduced bone volume.

Claims

1. A dental implant, comprising:

a body having an outer surface and a porous metal portion, which together form an implant-to-bone interface configured to engage bone when the implant is implanted in a jaw of a patient, wherein the porous metal portion extends less than a full height of the body, such that the porous metal portion terminates prior to a proximal end of the body at a first proximal point and terminates at a second distal point, the porous metal portion having an apical to coronal height of about 4 mm to about 6 mm and an outer diameter of about 4 mm to about 6 mm, the apical to coronal height being defined as a distance between the proximal and distal points, and wherein a distal portion of the body includes a thread for initial anchoring and securement of the dental implant to the bone, the outer surface of the body at a coronal section proximal to the first proximal point having a plurality of outwardly extending ribs positioned along the implant-to-bone interface, wherein the porous metal portion forms a majority of the body, and the body has a non-porous core, the porous metal portion forming a sleeve covering the core, and wherein the implant body is solid in cross section along a cross-sectional axis extending through the porous metal sleeve and the core for an entire length of the porous metal sleeve, wherein the porous metal sleeve forms a majority of the implant-to-bone interface of the implant.

2. The dental implant of claim 1, wherein the apical to coronal height and the outer diameter of the porous metal portion are approximately the same.

3. The dental implant of claim 1, wherein the apical to coronal height and outer diameter of the porous metal portion are both approximately 6 mm.

4. The dental implant of claim 1, wherein the body generally defines a full circumference, and wherein the porous metal portion forms less than the full circumference of the implant.

5. The dental implant of claim 1, further comprising a resorbable material filling at least a portion of the porous metal portion.

6. The dental implant of claim 1, wherein the non-porous core extends an entire length of the body.

7. The dental implant of claim 1, further comprising:

an abutment integral with the body, wherein the abutment has an integral endosseous collar portion that is integral with the porous metal portion.

8. The dental implant of claim 1, further comprising:

an abutment integral with the body, wherein the abutment is coronally spaced from the porous metal portion.

9. The dental implant of claim 1, further comprising:

an abutment integral with the body, wherein the abutment is integral with a reinforcing collar disposed toward a coronal end of the body, and wherein the reinforcing collar is formed from a biocompatible material different from the porous metal.

10. The dental implant of claim 9, wherein the reinforcing collar has an exterior surface that includes the plurality of outwardly extending ribs.

11. The dental implant of claim 1, further comprising a reinforcing collar disposed toward a coronal end of the body, wherein the reinforcing collar is formed from a biocompatible material different from the porous metal portion.