Dental implant system and associated insertion instruments

Disclosed is an implant system comprising an insertion part composed of a screw part and a neck part which comprises a recess in the neck end face thereof which is suitable for fixing an abutment, which neck part is provided, at some distance from the neck end face, with projections; and an insertion instrument for screwing down the insertion part, which insertion instrument comprises a handle part and a socket part having a socket end face which has an opening and at least the driving part of which is laterally bounded by walls, which driving part has a cross-section at right angles to the longitudinal axis, such that it can suitably accommodate the neck part of the insertion part and transfer a tightening torque to the insertion part through the projections, wherein the opening of the insertion instrument is provided with a bridge part which is contiguous to the driving part and which encloses the neck part, situated next to the projections and extending up to the neck end face, such that there is an inters