Patent ID: 8002547

Claim:
An implant-abutment system, comprising: a post adapted to extend supragingivally, the post having a tapered external surface with a flat portion; and an impression coping including: an uppermost surface having at least one radially extending flange for being received within impression material; a lowermost surface; an internal surface located between the uppermost and lowermost surfaces and configured to mate with the external surface of the post of the implant-abutment system, the internal surface having a tapered surface portion and a flat inner side wall for engaging the flat portion of the post to hold the impression coping non-rotationally on the post; and means for engaging a correspondingly shaped structure on the post of the implant-abutment system and axially holding the coping on the post, the axial engagement means being located such that at least a portion of the tapered surface portion is located below the axial engagement means and at least a portion of the tapered surface portion is located above a lower end of the axial engagement means, the portion of the tapered surface portion located below the axial engagement means being uninterrupted such that the lowermost surface is uninterrupted, wherein the at least a portion of the tapered surface portion located above the lower end of the axial engagement means engaging the tapered external surface of the post of the implant-abutment system.