#$%^&*AU2018206699A120180802.pdf#####DENTAL PROSTHESIS PRODUCTION DEVICE AND DENTAL PROSTHESIS ABSTRACT A dental prosthesis production device, comprising: an implant (40), an abutment (10) having a shape that is compatible with the implant (40) and having a cylindrical section, a dental structure (28) which can be attached to the cylindrical section of the abutment (10), and a machining tool or CAM device. The dental structure (28) is made of a dental material. The abutment (10) is mounted on the implant (40) via a releasable connection (44), having an anti-rotation mechanism (50), and an anti-rotation device (22) being configured between the abutment (10) and the dental structure (28). The anti-rotation device (22) forms at least one flute or groove at the cylindrical section of the abutment (10), said at least one flute or groove, in cross-sectional view, curved concavely, said at least one flute or groove extends across at least a part of the height of the cylindrical section, the cylindrical section of the abutment (10) and the at least one flute or groove ending at a rounded edge, said at least one flute(s) or groove(s) is/are maintained with a rounded edge and a concave curve even if the cylindrical section is shortened. The machining tool or CAM device is provided for selecting the abutment (10) for fitting with the dental structure (28) and the machining tool, or the CAM device is provided for shortening the abutment (10).
