Dresden 2006 – scientific programme
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DS: Dünne Schichten
DS 24: Poster presentation
DS 24.70: Poster
Tuesday, March 28, 2006, 15:00–17:30, P2
Characterization of ion implanted titanium surfaces for medical application — •Stefan Krischok1,2, Claudia Blank3, Michael Engel1,2, Richard Gutt1,2, Gernot Ecke2, Jens Schawohl2, Lothar Spieß2, Klaus Liefeith3, Gerhard Hildebrand3, and Juergen A. Schaefer1,2 — 1Institut für Physik, TU Ilmenau, P.O. Box 100565, 98684 Ilmenau — 2Zentrum für Mikro- und Nanotechnologien, TU Ilmenau, P.O. Box 100565, 98684 Ilmenau — 3Institut für Bioprozess- und Analysenmesstechnik e.V., 37308 Heiligenstadt
Titanium and its alloys are among the most biocompatible materials and therefore commonly used for orthopaedic and dental implants. They provide excellent biomechanical properties and chemical stability in biological systems. Main problems are the osteointegration and long term stability. Surface modifications like plasma spraying used in medical applications do not guarantee the desired long term stability. The implantation of ions into the near surface layer is a new approach to improve the osteointegration. We examined the surface topography, concentration profile of the observed elements as well as their chemical state and the crystallographic structure of ion (Ca, P, Na) implanted titanium surfaces. The characterization was performed by atomic force microscopy, X-ray photoelectron spectroscopy, X-ray diffraction and Auger electron spectroscopy depth profiling before and after exposing the samples to specific simulated body fluid supplemented with minerals. A strong influence of the surface properties on the cell response is observed; best results of the accomplished tests (biological and physical) were achieved for the co-implantation of calcium and phosphorus.