An implant system (160) for fastening a blocked, detachable dental prosthesis (172) in a patients jaw (166), comprising at least one distal implant (130) and at least one mesial implant (2), wherein each implant (2, 130) comprises a screw-in part (8) with an external thread (14), an abutment (20, 136) which can be inserted into the screw-in part (8), and a functional part (26) for fastening the dental prosthesis (172), which can be screwed together with the abutment (20, 136) by means of a functional screw (32), shall improve the anchorage of a blocked dental prosthesis (172) in a jaw (166) as against conventional solutions. For this purpose, according to the invention, the abutment (20) of each mesial implant (2) is made up of several parts, in particular of two parts.
