The subject matter of the invention is an apparatus for explanting a dental implant from a human or animal bone. In one example, the invention may use a trephine bur on the end side of which there is formed a bur bit. In one or more examples, an apparatus by which dental implants can be drilled out accurately is achieved by a guide pin that can be attached to the dental implant and by a guide element attached to the trephine bur, said guide element cooperating with the guide pin so that the trephine bur is guided in the axial direction of the guide pin.