Abstract: A device for fastening an orthesis or prosthesis, having a length-adjustable substantially rod-shaped bar assembly, which is pivotably connectable by two ends on exposed first ends of two implants fastened by a second end at a distance from each other in or onto a bone. With this bar assembly, a three-dimensional angle between the longitudinal axis of the bar assembly and the longitudinal axis of at least one implant can be set, so that, irrespective of the distance between and the relative position of the implants, each time, a fitting, preferably stress-free connection between these implants can be effected.

Abstract: A device for attaching a member that replaces a part of a set of teeth, wherein the device has a pin to be implanted in a jawbone and a coupling pin with a ball-and-socket joint disposed between the coupling pin and the implantation pin. The ball and/or the socket of the joint is made of a memory material. The memory position is such that at body temperature pivotal motion of the ball-and-socket joint can simply be brought into a desired position. Thus, the coupling pin can be brought into any desired position, virtually independently of the orientation of the implantation pin in the jaw, so that the dental-replacement member can be fitted readily without any tension arising therein.