Dresden 2011 – scientific programme
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BP: Fachverband Biologische Physik
BP 29: Posters: Biopolymers \& Biomaterials
BP 29.1: Poster
Thursday, March 17, 2011, 17:15–20:00, P3
Plasma-chemical oxidation of titanium implants enhances peri-implant bone volume and bone-implant contact in a rat model — •Christian Schrader1, Michael Diefenbeck2, Sergiy Zankovych3, and Ulrich Finger4 — 1Innovent e.V. Technologieentwicklung, Jena, Germany — 2Universitätsklinikum, Jena, Germany — 3Institut für Materialwissenschaft und Werkstofftechnologie, Jena, Germany — 4Königsee Implantate GmbH, Aschau, Germany
Orthopaedic and dental implants rely on an early force-fit bonding to the host bone for good clinical outcome. The implant anchorage has two structural components: Bone-implant bonding (osseointegration [OI]) and peri-implant trabecula bone [PIB]. OI is established by trabecular conjunctions with the PIB, which bridge the implant to the bony cortex and lead to a structural unit between implant and skeleton. Though several approaches to enhance OI and PIB-formation have been used with good results some stimuli still might bear the risk of complication. Our approach is to modify the titanium surface of the implant by Plasma Chemical Oxidation. It is a processing technique in which the surface of the implant is converted into an oxide coating. The coatings presented in this paper not only serve as a diffusion barrier they are also supplemented with useful compounds to assist early OI and to fulfil biocompatible features besides bio-inert ones related to optimised surface properties. It is now confirmed by in vivo testing with a modified rat tibial implantation model and its bilateral implantation of titanium cylinders. Future project plans include investigations into functional coatings providing antibacterial properties.