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- Title
Bioactivity and corrosion behavior of magnesium barrier membranes.
- Authors
Hornberger, Helga; Kissel, Hannah; Striegl, Birgit; Kronseder, Matthias; Vollnhals, Florian; Christiansen, Silke
- Abstract
In the current research, magnesium and its alloys have been intensively studied as resorbable implant materials. Magnesium materials combine their good mechanical properties with bioactivity, which make them interesting for guided bone regeneration and for the application as barrier membranes. In this study, the in vitro degradation behavior of thin magnesium films was investigated in cell medium and simulated body fluid. Three methods were applied to evaluate corrosion rates: measurements of (i) the gaseous volume evolved during immersion, (ii) volume change after immersion, and (iii) polarization curves. In this comparison, measurements of H2 development in Dulbecco's modified Eagle's medium showed to be the most appropriate method, exhibiting a corrosion rate of 0.5 mm·year−1. Observed oxide and carbon contamination have a high impact on controlled degradation, suggesting that surface treatment of thin foils is necessary. The bioactivity test showed positive results; more detailed tests in this area are of interest.
- Subjects
GUIDED bone regeneration; MAGNESIUM; SURFACE preparation; MAGNESIUM alloys; THIN films; BODY fluids
- Publication
Materials & Corrosion / Werkstoffe und Korrosion, 2022, Vol 73, Issue 1, p8
- ISSN
0947-5117
- Publication type
Article
- DOI
10.1002/maco.202112385