Synthesis and Properties of Graded Porous Ti-TiO₂ Multifunctional Composites Obtained by Different Processing Methods

Abstract:

Functionally graded materials for load bearing implants have a long history of academic development and an already high degree of maturity. Efforts are now undertaken to improve the biocompatibility and even induce bioactivity within the implant-bone interface by optimised surface nanostructure of porous ceramic and metalic layers grown or sintered on a metallic implant, in order to arrive at cementless implants capable of fast osteointegration and high interface strength. Several new methods for surface structure and composition modification are presented for Ti-alloy based implants: a nano-structuring of the surface by re-deposition of TiO2 using an ECR-Microwave Plasma treatment combined with ion bombardment on a sintered TiO2 ceramic surface, a multiscale modification of porous Ti-coatings by means of Micro-Arc-Oxidation, MAO, and a meso-structuring of the surface by means of a laser treatment. The goal is to establish a multi-functionality in such materials by formation of a morphological and compositional gradient spanning many dimensions. The applicability of these methods to real implants is discussed for a dental implant.

• Periodical: Materials Science Forum (Volumes 631-632)
• Pages: 141-146
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.631-632.141
• Online since: October 2009
• Authors: Sofiane Bouazza, Elke Fuchs, Andreas Rosin, Monika Willert-Porada

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