Dental implant system, comprising a dental implant with a receiver for dental mounting parts, wherein the receiver extends along a longitudinal axis of the dental implant, and at least one first and at least one second dental mounting part (30a, 30b), which can alternatively be connected with the dental implant, wherein the mounting parts (30a, 30b) in each case comprise a connecting region (34a, 34b), which can be axially introduced into the receiver, wherein - the receiver comprises at least one cylindrical wall portion and the dental implant has a support face perpendicular to the longitudinal axis, so that a corresponding first mounting part can be supported radially on the at least one cylindrical wall portion and axially on the support face; - the receiver furthermore comprises at least one truncated-cone-shaped wall portion, on which a corresponding second mounting part can be supported radially and axially; - the connecting region of the at least one first mounting part comprises at least one cylindrical wall portion and a support face perpendicular to the longitudinal axis, so that the corresponding cylindrical wall portions (20, 36a) of the receiver and of the connecting region engage one another in shape-locking manner and the corresponding support faces (26, 42) abut one another when the first mounting part is connected to the dental implant; - the connecting region of the at least one second mounting part comprises at least one truncated-cone-shaped wall portion, so that the corresponding truncated-cone-shaped wall portions (18, 44) of the receiver and of the connecting region engage one another in shape-locking manner when the second mounting part is connected to the dental implant; and - the receiver comprises a portion serving as an anti-rotation device, with which a corresponding portion (38a, 38b) of the first and/or second dental mounting part (30a, 30b) can engage, characterized in that the portion serving as an anti-rotation device is arranged between a cylindrical and a truncated-cone-shaped wall portion (20, 18). - the receiver comprises at least one cylindrical wall portion and the dental implant has a support face perpendicular to the longitudinal axis, so that a corresponding first mounting part can be supported radially on the at least one cylindrical wall portion and axially on the support face; - the receiver furthermore comprises at least one truncated-cone-shaped wall portion, on which a corresponding second mounting part can be supported radially and axially; - the connecting region of the at least one first mounting part comprises at least one cylindrical wall portion and a support face perpendicular to the longitudinal axis, so that the corresponding cylindrical wall portions (20, 36a) of the receiver and of the connecting region engage one another in shape-locking manner and the corresponding support faces (26, 42) abut one another when the first mounting part is connected to the dental implant; - the connecting region of the at least one second mounting part comprises at least one truncated-cone-shaped wall portion, so that the corresponding truncated-cone-shaped wall portions (18, 44) of the receiver and of the connecting region engage one another in shape-locking manner when the second mounting part is connected to the dental implant; and - the receiver comprises a portion serving as an anti-rotation device, with which a corresponding portion (38a, 38b) of the first and/or second dental mounting part (30a, 30b) can engage,