Dental implant with indexing surfaces having a friction-reducing coating

Patent metadata

Field	Value
Publication number	US-12588983-B2
Application number	US-202117519046-A
Country	US
Kind code	B2
Filing date	Nov 4, 2021
Priority date	May 5, 2010
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

The present invention relates to a connection between a post part provided for being screwed into the jawbone and an associated superstructure part to which a dental prosthesis can be fastened. The connection between the post part and the superstructure part has a rotational self-centering action, wherein at least one of the surfaces provided for this purpose has a friction-minimizing modification and/or coating.

First claim

The invention claimed is:

1 . A dental implant part provided for being inserted into a jawbone, comprising a receiving channel, wherein the receiving channel includes in a first indexing area within the receiving channel at least one guiding contact surface, the guiding contact surface providing rotational self-centering properties and being inclined against a longitudinal axis of the dental implant part, said first indexing area presenting no rotational locking mechanism and extending along a first portion of the longitudinal axis, wherein said first portion overlaps an external thread of the dental implant part along the longitudinal axis, and
wherein the receiving channel includes in a second indexing area within the receiving channel a number of functional indexing surfaces oriented parallel to the longitudinal axis of the dental implant part, said second indexing area extending along a second portion of the longitudinal axis that is distinct from the first portion.

2 . The dental implant part of claim 1 , wherein the first indexing area and the second indexing area are designed for the same number of positioning possibilities.

3 . The dental implant part of claim 1 , wherein the second indexing area comprises a rotational locking mechanism.

4 . The dental implant part of claim 1 , wherein said receiving channel is adapted to receive a contact pin of an associated structural piece such that a proximal end of the contact pin extends past an upper edge of the receiving channel by a predetermined distance.

5 . The dental implant part of claim 1 , wherein the guiding contact surface inclined against a longitudinal axis of the dental implant part has a non-round cross section with a number of concave parts and/or a plurality of convex parts.

6 . The dental implant part of claim 5 , wherein the second indexing area comprises a rotational locking mechanism.

Assignees

• Nobel Biocare Services Ag

Inventors

• Zipprich Holger

Classifications

• A61C8/0056

  diverging in the apical direction of the implant or abutment · CPC title

• A61C8/0071

  with a self-locking taper, e.g. morse taper · CPC title

• A61C8/0068

  with an additional screw · CPC title

• A61C8/0013

  with a surface layer, coating · CPC title

• A61C8/0059

  with additional friction enhancing means · CPC title