Titanium surface treated dental screw for attaching a prosthetic component to an implant

• US 5,833,463 A
• Filed: 12/09/1996
• Issued: 11/10/1998
• Est. Priority Date: 12/09/1996
• Status: Expired due to Term

• Current Assignee: Nobel Biocare USA LLC (Envista Holdings Corporation)
• Original Assignee: Nobel Biocare USA LLC (Envista Holdings Corporation)
• Inventors: Hurson, Steven M.
• Primary Examiner(s): Wilson, John J.
• Application Number:
  US08/762,700
• Time in Patent Office: 701 Days
• Field of Search: 433/173, 433/174, 433/175, 433/176, 433/201.1, 433/172
• US Class Current: 433/173
• 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 8/0015 being a conversion layer, e.g. oxide layer
• CPC Class Codes: A61C 8/0022 Self-screwing A61C8/0028 takes precedence

Abstract

A dental prosthesis system comprising a titanium dental implant, a dental implant and a titanium screw coated with anodized titanium that is sufficiently softer than titanium that such coating will, upon application of torque to the screw, deform be largely displaced without any deformation of the titanium screw, is disclosed.

Claims

1. An improved dental implant system comprising, in combination,

an elongate titanium dental implant having a proximal end and a distal end, said titanium implant being so constructed and configured as to define, in the proximal end thereof, a threaded orifice constructed, configured and adapted to receive a titanium threaded dental screw for attaching a prosthetic component to the implant, and

a titanium threaded dental screw received in said orifice, said titanium threaded dental screw having formed in situ on the threads of the titanium threaded dental screw an anodized coating,

said anodized coating on said titanium threaded dental screw consisting essentially of anodized titanium that is sufficiently softer than titanium that upon application of torque to the screw said coating on said titanium threaded dental screw will deform inside said titanium dental implant and be displaced without deformation of the titanium threaded dental screw.

2. The improved dental implant system of claim 1 wherein the anodized coating is so thick that upon deformation thereof the torque forces are substantially distributed along a substantial portion of the threads of said titanium threaded dental screw.

3. In a dental implant system that comprises an elongate titanium dental implant having a proximal end and a distal end and being so constructed and configured as to define, in the proximal end thereof, a threaded orifice constructed, configured and adapted to receive a titanium threaded dental screw for attaching a prosthetic component to the implant, and a titanium threaded dental screw received in said orifice,

the improvement wherein said titanium threaded dental screw has formed in situ on the threads thereof an anodized coating,

said anodized coating on said titanium threaded dental screw consisting essentially of anodized titanium that is sufficiently softer than titanium that, upon application of torque to said titanium threaded dental screw in said threaded orifice in said titanium dental implant, said coating on said titanium threaded dental screw will deform inside said titanium dental implant, said coating being displaced without deformation of the titanium threaded dental screw.

4. The dental implant system of claim 3 wherein the anodized coating is so thick that upon deformation thereof the torque forces are substantially distributed along a substantial portion of the threads of said titanium threaded dental screw.

5. A titanium dental screw that is not a dental implant and that is constructed, configured and adapted to be received in a threaded orifice in a titanium dental implant, and not in an orifice in bone, that is constructed, configured and adapted to receive a titanium threaded dental screw for attaching a prosthetic component to the implant,

said titanium threaded dental screw having formed in situ on the threads thereof an anodized coating,

said anodized coating on said titanium threaded dental screw consisting essentially of anodized titanium that is sufficiently softer than titanium that, upon application of torque to said titanium threaded dental screw in said threaded orifice in said titanium dental implant, said coating on said titanium threaded dental screw will deform inside said titanium dental implant, said coating being displaced without deformation of the titanium threaded dental screw threads.

6. The dental implant system of claim 5 wherein the anodized coating is so thick that upon deformation thereof the torque forces are substantially distributed along a substantial portion of the threads of said titanium threaded dental screw.