Abstract: The invention concerns a fast transfer yoke for the cranium-calculated transfer of a maxilla plaster model from a patient into a dental articulator as well as for the recording of axis-related individual mandibular joint geometry of the patient in question. The invention is to create a fast transfer yoke that, with easy handling, facilitates fast recording of patient data, i.e., of the mandible movements as well as of the patient axis and their transfer into a dental articulator or to an mounting apparatus.

Abstract: A dental articulator is disclosed, with condylar housings located in inteangeable fashion in mounts on the upper member of the dental articulator for accommodating and guiding condyles fixed to the lower member, where horizontal guide elements for the condyles for simulating the sagittal movements of the mandibular joint and Bennett guide elements for simulating the transverse movements of the mandibular joint are located in the condylar housing.

Abstract: A telescopically adjustable surgical instrument for a distraction apparatus used in performing an elongation osteotomy comprises a rigid support rail having a guide chamber or guide recess and a rigid extension rail axially slidable in said recess. The extension rail has hinged bone connecting plates by means of which the extension rail may be attached to the distal part of a bone. An extension drive mechanism may be releasably connected to the two rails. The instrument is completely implantable. After the distraction, the position of the extension rail is fixed and the drive mechanism may be easily removed.