-transparent.png){kind=logo}
Compact cylindrical implants (5 x 15.5 mm) of seven calcium phosphate ceramics of different formulations that had been implanted for 6 weeks without fixation in the tibia of dogs were examined histologically. The tissue compatibility of the implant turned out to be dependent on the mineralogical and chemical composition of the material: the ceramic material was biocompatible at a CaO/P2O5 ratio between 2:1 and 4:1, the optimum ratio being about 3:1 (tricalcium phosphate). In addition, cylindrical tetracalcium phosphate implatns with an entirely porous structure were implanted in the same manner. After 6 months, they were resorbed to a minor extent. Implants of different calcium phosphate mixtures, on the other hand, were resorbed to a large extend after the same time. The ceramic material was replaced by mineralised bone tissue which had formed directly on the ceramic implant as well as within the pores. There were no foreign body reactions. Investigations with segment-shaped implants which were implanted in the tibia of dogs and fixed with AO-plates or splints extra-cutaneously for about 8-10 weeks, provided information abouth the maximum stress that can be borne by the implants. While implants with a porosity of 75 percent did not sustain the stress after the fixation had been removed, those with a porosity of 45 percent could be subjected to physiological stress after removal of the splints.
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
February 1977,
Langenbecks Archiv fur Chirurgie,
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
September 2012,
Spine,
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
December 1982,
Journal of the American Dental Association (1939),
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
June 1979,
Zeitschrift fur Orthopadie und ihre Grenzgebiete,
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
May 1979,
Plastic and reconstructive surgery,
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
January 1984,
Deutsche Zeitschrift fur Mund-, Kiefer- und Gesichts-Chirurgie,
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
January 1985,
Der Zahnarzt; Colloquium med. dent,
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
December 2014,
Journal of applied biomaterials & functional materials,
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
November 2009,
Zhongguo gu shang = China journal of orthopaedics and traumatology,
K Köster, and
E Karbe, and
H Kramer, and
H Heide, and
R König
September 2010,
Tissue engineering. Part A,
