The prosthetic restoration on implants for the rehabilitation of edentulous jaws places high demands on work of the dental technician. In the case of conventional production, a more or less large clearance of the anchoring elements is observed which leads to a loss of function depending on the mechanical load and which requires time-consuming and cost-intensive reworking. Due to the possibility of manufacturing the primary and secondary structures in a single step in the CAD / CAM process, however, it is possible to achieve a precise fit of the secondary structure on the primary bar reconstruction. Since the removable bridges are passively secured by precision connector or active retention elements, friction losses do not occur. The superstructures are suitable for the initial supply in the upper and lower jaw as well as repair of defective implant suprastructures. The high degree of manufacturing accuracy can be demonstrated clinically in a stable bearing of the dental prosthesis without friction loss
