Dental implant intended to be screwed into the jawbone for supporting at least one abutment, and having a socket arrangement with a first and a second section with respective geometrical profiles, wherein the socket arrangement is devised to cooperate on the one hand with the abutment for rotationally securing the abutment in a determined position, and on the other hand with an insertion tool for screwing the implant in, wherein - the socket arrangement is devised as a central internal socket with an opening at the coronal end of the dental implant and in direction of a longitudinal center axis of the implant , wherein the first section of the socket arrangement defines first contact surfaces and wherein the second section of the socket arrangement defines second contact surfaces , the first and the second contact surfaces being located substantially at the same height in respect to the longitudinal center axis of the implant ; - wherein the first contact surfaces form together, along an orthogonal cross-section taken at the longitudinal center axis of the implant at the apical end of the first contact surfaces , a regular polygon which is partly interrupted by outwardly extending notches , the first contact surfaces being parallel and partly inclined with respect to the longitudinal center axis of the implant , the inclination being such as to taper inwardly from their coronal end, wherein interrupting and outwardly extending ridges emerge from the first contact surfaces , the ridges extending from the notches in an apical direction of the dental implant , the first contact surfaces being adapted to engage and rotationally secure the abutment; - wherein the second contact surfaces extend from the notches within the ridges in the direction of the longitudinal center axis, the second contact surfaces being adapted to engage with the insertion tool ; - wherein the notches are positioned at sides or at corners of the regular polygon; and wherein the regular polygon is an octagon. - the socket arrangement is devised as a central internal socket with an opening at the coronal end of the dental implant and in direction of a longitudinal center axis of the implant , wherein the first section of the socket arrangement defines first contact surfaces and wherein the second section of the socket arrangement defines second contact surfaces , the first and the second contact surfaces being located substantially at the same height in respect to the longitudinal center axis of the implant ; - wherein the first contact surfaces form together, along an orthogonal cross-section taken at the longitudinal center axis of the implant at the apical end of the first contact surfaces , a regular polygon which is partly interrupted by outwardly extending notches , the first contact surfaces being parallel and partly inclined with respect to the longitudinal center axis of the implant , the inclination being such as to taper inwardly from their coronal end, wherein interrupting and outwardly extending ridges emerge from the first contact surfaces , the ridges extending from the notches in an apical direction of the dental implant , the first contact surfaces being adapted to engage and rotationally secure the abutment; - wherein the second contact surfaces extend from the notches within the ridges in the direction of the longitudinal center axis, the second contact surfaces being adapted to engage with the insertion tool ; - wherein the notches are positioned at sides or at corners of the regular polygon; and <EOS>