Immediate placement of a definitive metal-resin implant-fixed complete prosthesis on four implants after flapless computed tomographic (CT)-guided surgery was compromised because of misfit due to a discrepancy in the position of an implant. However, the definitive prosthesis could be delivered on the day of surgery with the help of laser-welding procedures. Immediate loading of four maxillary implants with a definitive prosthesis might be a viable option using the laser-welding technique in case of misfit of the prosthesis. Schlagwörter: All-on-Four, CT-generated surgery, immediate loading, misfit, Nobel Guide