Deutsche Zeitschrift für Mund-, Kiefer- und Gesichts-Chirurgie
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Dtsch Z Mund Kiefer Gesichtschir · Jul 1991
[Can steel screws be combined with titanium plates? Hard polishing technique and SEM in animal experiments].
To clarify the compatibility of steel and titanium, mandibular resections were performed on 24 sheep and the defects bridged with titanium plates and steel vs. titanium screws. 6, 12 and 24 weeks after osteosynthesis the implants were removed along with the surrounding bone segment and thin ground sections were prepared using the Donath method. The sections were then studied by light, fluorescence, polarization and scanning electron microscopy. The stability and easy removal are advantages of steel screws rendering them particularly suitable for temporary implantations. ⋯ After 3 and 6 months some minimum friction corrosion was observed at the screw/plate interface of steel screws. None of the specimens, however, showed signs of local tissue damage such as metallosis. From this it may be concluded that at least on a temporary basis a combination of steel screws and titanium plantes seems to be possible.
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Dtsch Z Mund Kiefer Gesichtschir · Mar 1991
[Pain treatment in advanced head and neck tumors. Pilot study with continuous subcutaneous administration of morphine].
In the pain treatment of patients with incurable head and neck tumors it may be difficult to provide adequate oral drug therapy in the advanced stages. In these cases continuous subcutaneous application of morphine by means of external infusors is an alternative. ⋯ Producing sufficient analgesia and having, all told, comparable side-effects, this method was experienced by all patients as being more agreeable than the previously used oral mode of application. Technical simplicity of handling makes this safe and effective treatment concept also a valuable means for outpatient care in tumor clinics.