A dental implant which comprises, on an outer side, an external thread for fixing the dental implant to a jaw bone, and has an opening which extends along a central longitudinal axis of the dental implant and in which an internal thread for fixing a superstructure to the dental implant is arranged, wherein the dental implant furthermore comprises an interface for fixing the superstructure to the dental implant, said interface being arranged in a region of an end face of the dental implant and comprising an inner surface which is arranged in the opening and at least partially surrounds the longitudinal axis, wherein the dental implant comprises an anti-rotation element that is arranged in the opening and is configured to prevent the superstructure from rotating about the longitudinal axis relative to the dental implant, wherein the anti-rotation element is at a shorter distance from the longitudinal axis than the inner surface, and wherein a radially outer side of the anti-rotation element that faces away from the longitudinal axis faces the inner surface and is spaced apart therefrom such that there is an upwardly open cavity between the radially outer side of the anti-rotation element and the inner surface, wherein the anti-rotation element has a convex-concave shape in a cross section that is oriented orthogonally to the longitudinal axis, wherein a radially inner side of the anti-rotation element, which faces the opening, is concavely shape, and the radially outer side of the anti-rotation element, which is opposite the radially inner side, is convexly shaped, and wherein the anti-rotation element comprises two planar drive surfaces (34a, 34b) extending parallel to each other, which are arranged on opposite sides of the anti-rotation element, characterized in that the drive surfaces (34a, 34b) run between the radially outer side and the radially inner side of the anti-rotation element and are arranged transversely to the radially outer side and the radially inner side of the anti-rotation element. wherein the dental implant furthermore comprises an interface for fixing the superstructure to the dental implant, said interface being arranged in a region of an end face of the dental implant and comprising an inner surface which is arranged in the opening and at least partially surrounds the longitudinal axis, wherein the dental implant comprises an anti-rotation element that is arranged in the opening and is configured to prevent the superstructure from rotating about the longitudinal axis relative to the dental implant, wherein the anti-rotation element is at a shorter distance from the longitudinal axis than the inner surface, and wherein a radially outer side of the anti-rotation element that faces away from the longitudinal axis faces the inner surface and is spaced apart therefrom such that there is an upwardly open cavity between the radially outer side of the anti-rotation element and the inner surface, wherein the anti-rotation element has a convex-concave shape in a cross section that is oriented orthogonally to the longitudinal axis, wherein a radially inner side of the anti-rotation element, which faces the opening, is concavely shape, and the radially outer side of the anti-rotation element, which is opposite the radially inner side, is convexly shaped, and wherein the anti-rotation element comprises two planar drive surfaces (34a, 34b) extending parallel to each other, which are arranged on opposite sides of the anti-rotation element, characterized in that the drive surfaces (34a, 34b) run between the radially outer side and the radially inner side of the anti-rotation element and are arranged transversely to the radially outer side and the radially inner side of the anti-rotation element.