The present invention relates to an abutment for use in a dental implant system, wherein the abutment is provided with a guiding and lock means for associating the abutment to a dental implant, the guiding and lock means including: a first conically tapered section and a second substantially non-tapered section arranged apically adjacent to the first section, the second section being provided with an anti-rotational means, wherein the anti-rotational means of the second section includes a surface extending radially with respect to the axis of the abutment and adapted to cooperate with a dental implant, such that to provide radial guiding to the abutment upon the insertion into the implant. Further, the invention relates to a dental implant formed in a similar manner.