Prosthetically based implant planning is necessary so that implants are set expediently and correctly during surgery. A clinical case is presented to describe how this can be performed today purely digitally. Prosthetic planning was undertaken with the Cerec CAD/CAM system. The data record created was transferred and superimposed on a CBCT 3-D radiograph. The position of the implant was planned taking the prosthetic planning into account. Keywords: CAD/CAM, Cerec, cone beam computed tomography, 3-D x-ray, implant planning, prosthetic planning, drilling templates