Patent ID: 11890166
Assignee: ZIMMER DENTAL, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A dental implant system comprising:
an implant comprising:
an implant body having a longitudinal axis, a coronal end, and an apical end, wherein the coronal end includes an externally facing surface oriented transverse to the longitudinal axis;
an implant internal bore, provided within the implant body, having a coronal end communicating with the coronal end of the implant body and an apical end;
a first internally facing surface extending from the coronal end of the implant internal bore towards the apical end of the implant internal bore, at least a portion of the first internally facing surface being tapered inwardly towards the apical end of the implant internal bore;
an internally threaded portion positioned within the implant internal bore between an apical end of the first internally facing surface and the apical end of the implant internal bore;
an implant anti-rotation feature; and
a transition zone having a gradual change in geometry from the first internally facing surface to the internally threaded portion; and

an abutment comprising:
an abutment body having a longitudinal axis, a coronal end and an apical end;
an abutment internal bore provided within the abutment body and including an internally threaded portion;
a first externally facing surface extending from a location between the coronal end and the apical end of the abutment body and towards the apical end, at least a portion of the first externally facing surface being tapered inwardly towards the apical end of the abutment body;
an external shoulder positioned coronal of the first externally facing surface, wherein a portion of the abutment is configured to be received within the implant internal bore such that the first externally facing surface of the abutment forms an interference fit with the first internally facing surface of the implant internal bore and the external shoulder of the abutment forms a seal with the coronal end surface of the implant body;
an abutment anti-rotation feature, wherein together the implant anti-rotation feature and the abutment anti-rotation feature form a second interference fit; and
a fastener insertable within the internal bore of the abutment and configured to engage the internally threaded portion of the abutment and the internally threaded portion of the implant.