The invention relates to a denture system comprising an implant (1) for osseointegration into a jawbone and comprising an abutment (2) with an insertion stem (6) that can be inserted into a receiving opening (4) of the implant (1). At least one shoulder (9) is formed on the insertion stem (6), said shoulder running at least partly in a radial manner with respect to a longitudinal axis of the insertion stem. At least one stop (5) is provided on an inner circumferential surface of the receiving opening (4), said stop running at least partly in a radial manner. In a first rotational position between the insertion stem (6) and the implant (1), the abutment (2) can be moved relative to the implant (1) in an axial direction, and in a second rotational position in which the insertion stem (6) is rotated about the longitudinal axis relative to the implant (1) by an angle with respect to the first rotational position, at least one shoulder (9) axially engages behind a stop (5) such that a movement between the implant (1) and the abutment (2) in an opposite axial direction is blocked.
