Die Entwicklung des Parodontiums nach Zahnkeimtransplantationen im Rahmen der kieferorthopädischen Behandlung

Zusammenfassung Durch Tierversuche an jungen Beagle-Hunden konnte die normale Entwicklung des Parodontiums nach Zahnkeimtransplantationen histologisch nachgewiesen werden. Die klinisch-röntgenologischen Untersuchungen zeigten keine pathologischen Befunde im Parodontiumbereich nach Zahnkeimtransplantationen beim Menschen. Die transplantierten Zähne können wie die anderen kieferorthopädisch bewegt werden. In diesem Beitrag wird auf die häufigsten Indikationen von Zahnkeimtransplantationen von Molaren, Prämolaren und Eckzähnen hingewiesen.

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Summary The normal development of the periodontal structures was confirmed histologically on young Beagle-dogs following tooth-germ transplants. In humans, clinical and radiographic examinations revealed no pathology of the periodontium following transplantation of tooth germs. The grafted teeth could be moved orthodontically in the same way as any other teeth. No precautions need to be taken. This paper describes the most common indications for transplanting the tooth-germs of canines, bicuspids and molars.

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Résumé Dans les expérimentations animales chez de jeunes chiens-Beagles, on a prouvé que les structures parodontales sont normalement développées après la transplantation de germes dentaires. Les examens cliniques et radiologiques chez de jeunes sujets d'espèce humaine n'ont pas montré de résultats pathologiques au niveau du parodonte après la greffe de germes dentaires. Les dents transplantées peuvent être déplacées orthodontiquement comme les autres dents sans mesures spéciales. Dans cet article, on a donné les indications concernant les greffes des germes de molaires, prémolaires et canines.

     

Zur konservativen Therapie der Unterarmfraktur im Wachstumsalter mit besonderer Berücksichtigung der Korrelation von röntgenologischem Verlauf,objektivem und subjektivem Gesamtergebnis

143 out of 310 patients in the age of one to 18 years suffering from forearm-shaft-fractures could be followed up at the 2nd Department of Traumatology University of Vienna, out of a period between 1978 and 1983. A correlation between radiologic follow-ups and objective/subjective findings was achived by means of the WAMASTAT/SAS program at the Institute of Medical Computer Sciences. With the aid of computer diagrams of the angulation of fracture-dislocation awaited restrictions of movement can be anticipated. Corrective reductions performed in time can prevent disalignment and improve long-term follow-up results.     

Hüfttumorprothese-Indikation in einem unfallchirurgischen Schwerpunktkrankenhaus und Ergebnisse

This is a report about six cases of replacement of the proximal femur by a cementless special prosthesis in modular system done in the Unfallkrankenhaus Wien-Meidling. One of the patients suffered by a lymphoma, three others had fractures caused by bone metastasis. One was a pertrochanteric fracture complicated by osteoporosis, and finally one fracture of the femur preceded by an insufficient implantation of a semitotal hip replacement. The hipsocket was supplied four times by a cementfree Polyäthylensocket, in one case a CLW-ring was implanted. Investigation showed that after a little more than two months the stump of femur became porous and by an average of eleven months the prosthesis was covered by bone. The complications were in one case an incomplete fracture of the diaphysis and in another case a luxation for three times. There are several indications for a tumor prosthesis: 1. Primary and secondary malignant tumors. 2. Bone metastasis with or without fractures. 3. Comminuted fractures complicated by various factors, e. g. osteoporosis. 4. Loosening of prosthesis with poor bone conditions or failed implantation of a standard prosthesis. Although the successes seem to be quite promisingly, this method should be applied in a quite differentiated way, as any retreat is nearly impossible, once started.