Vergleichende experimentelle Untersuchungen an Bioglas (L. L. Hench), Al2O3-Keramik und mit mod. Bioglas beschichteter Al2O3-Keramik
✍ Scribed by P. Griss; E. Werner; G. Heimke; R. Buchinger
- Publisher
- Springer
- Year
- 1977
- Tongue
- English
- Weight
- 972 KB
- Volume
- 90
- Category
- Article
- ISSN
- 1434-3916
No coin nor oath required. For personal study only.
✦ Synopsis
Comparative Experimental Investigations with Bioglass (L. L. Hench), Al203-Ceramic and Al203-Ceramic Coated with a Mod. Bioglass
I. Results of Experiments under Non-Loaded Conditions
Summary. This report deals with comparative results obtained with unloaded intra-osseous implants of bioglass (L. L. Hench), A1203-ceramic and A1203ceramic coated with a rood. bioglass. A1203-ceramic and bone form a direct bony interface without fibrous tissue interposition, this resulting in a pure mechanic fixation of the implant through frictional forces of the surface roughed ceramic. Pure bioglass (45 S 5) and bone form a unique persisting direct interface by means of physico-chemical or biochemical phaenomena stabilizing the implant. Interface stability seams to be higher than the fatique strenth of the glass itself. This interface is developed as a consequence of solubility of some of the glass constituents within a surface layer of up to 200 microns, running parallel with a reduction of strength of this surface glass layer. The boronoxide containing bioglass, flame-sprayed onto A1203-ceramic samples seams to be less soluble and therefore seams to have lesser bonding capability to bone. The stability of the interface bioglass coating-A1203ceramic was low. Zusammenfassuug. Es wird fiber vergleichende Untersuchungen zur Grenzfl/ichenentwicklung um unbelastete intraoss/ire Implantate aus Bioglas (L. L. Hench), A1203-Keramik und mit modifiziertem Bioglas beschichteter A1203-Keramik berichtet. Zwischen A1203-Keramik und Knochen entsteht eine * Herrn Professor Dr. L. L. Hench sowie Dr. D. Greenspan, Gainesville/Florida, sind wir ftir die Oberlassung der Implantate zu auBerordentlichem Dank verpflichtet