Titán minták anodizálása és bakteriológiai vizsgálata

Tooth replacement by titanium implants has emerged during the last decade, but unfortunately the number of implant-associated infections is also increasing. The growing resistance of bacteria to antibacterial medicines exacerbates the problem that necessitates the development of alternative solutions. The most common implant materials in dentistry are titanium alloys so the goal of our study was to develop titanium-oxide nanostructures on the surface of titanium implant materials that may impede the attachment of contagious bacteria on the surface. In our experiments three different type of titanium discs were subjected to anodic oxidation. We investigated the effect of voltage (10-200 V) on the surface pattern of emerging TiO2. We examined the surfaces by scanning electron microscopy (SEM) and atomic force microscopy (AFM). After surface characterization the discs were subjected to bacterial contamination study. We observed lattice-like nano-structures parallel with the plane of the titanium disc. We found fewer bacteria on these surfaces than on the chemical etched. The parallel TiO2 nanophase topography may exhibit particular characteristics in terms of chemical and biological activity that could open up new opportunities in nanosurface research.