Die Veränderungen der physikalischen Eigenschaften von Polyacetalharz (Hostaform, C®), Polyester (Hostadur®), Polyäthylen (Hostalen®) und Teflon (Hostaflon®) nach tierischer Implantation und mehrfachem Autoklavieren
✍ Scribed by Dietmar Wolter; Caius Burri; Lothar Kinzl; Arno Müller
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 789 KB
- Volume
- 86
- Category
- Article
- ISSN
- 1434-3916
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✦ Synopsis
The change of physical properties of plastics (polyoxymethylene-copolymer, polyethyleneterephthalate, polyethylene, polytetrafluorethylene) and the bio-compatibility of these materials were examined by implantation in the backmuscle of 6-month-old male rabbits for 4 and 12 weeks and after autoclavation. We have found out, that after implantation and autoclavation polyethylene-terephthalate demonstrates a strong diminution of the visco-elastic qualities. Polyethylene and polytetrafluorethylene were not changed by these treatments. After an implantation of 12 weeks and an autoclavation of four times the visco-elastic properties of polyoxymethylene-copolymer were only slightly diminished by 10 to 15%. The histological investigation of the surrounding tissue demonstrated a very good bio-compatibility of polyethylene. After an implantation of 4 weeks polyoxymethylene-copolymer, polyethyleneterephthalate and polytetrafluorethylene produced a comparable foreign body reaction, which, however, was evidently diminished after an implantation of 12 weeks.