Dental implant and dental prosthesis

A dental prosthesis, including:

• a superstructure;
• a dental implant that comprises an implant body having on an outer side an external thread configured to fasten the dental implant to a jaw bone and having an opening extending along a longitudinal axis of the dental implant, wherein the opening comprises an internal thread configured to fasten the superstructure to the dental implant, wherein the implant body further comprises an interface configured to fasten the superstructure to the dental implant, said interface being arranged at a front end of the implant body, wherein the dental implant further comprises an anti-rotation element which is configured to prevent rotation of the superstructure about the longitudinal axis relative to the dental implant, wherein the anti-rotation element is configured as a component separate from the implant body, which is attached to the implant body in an area of the interface, wherein the interface comprises a convex curvature and a recess in which the anti-rotation element is arranged, wherein the convex curvature is convexly rounded in a longitudinal cross section along the longitudinal axis of the dental implant, extends over an angular range of at least 90° around the longitudinal axis, and is at least partially interrupted by the recess, wherein the anti-rotation element comprises a pin inserted into a bore arranged in the implant body and a head portion arranged outside the bore, wherein the head portion has a larger diameter than the pin, wherein the pin and the head portion are integrally connected to each other, and wherein the head portion comprises a convex surface and two planar abutment surfaces arranged on opposite sides of the convex surface;
• and
• a fastening element configured to fasten the superstructure to the dental implant.

A superstructure, comprising:

• an opening extending inside the superstructure from a front end of the superstructure along a longitudinal axis of the superstructure;
• and
• an interface configured to fasten the superstructure to a dental implant;
• wherein the interface comprises a concave curvature, wherein the concave curvature is arranged on an outside of the superstructure, faces away from the longitudinal axis, extends over an angular range of at least 90° around the opening, and is interrupted by a recess arranged at and opening towards the front end,
• where the recess comprises a concave surface and two planar abutment surfaces arranged on opposite sides of the concave surface, and
• wherein the planar abutment surfaces run parallel to each other.

A dental prosthesis, including:

• a dental implant;
• a superstructure that comprises an opening extending inside the superstructure from a front end of the superstructure along a longitudinal axis of the superstructure, and an interface configured to fasten the superstructure to the dental implant, wherein the interface comprises a concave curvature, wherein the concave curvature is arranged on an outside of the superstructure, faces away from the longitudinal axis, extends over an angular range of at least 90° around the opening, and is interrupted by a recess arranged at and opening towards the front end, where the recess comprises a concave surface and two planar abutment surfaces arranged on opposite sides of the concave surface, and
• wherein the planar abutment surfaces run parallel to each other;
• and
• a fastening element configured to fasten the superstructure to the dental implant.