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BP: Fachverband Biologische Physik
BP 29: Posters: Biopolymers \& Biomaterials
BP 29.27: Poster
Thursday, March 17, 2011, 17:15–20:00, P3
Homogeneous Hydroxyapatite Surfaces for Dental Studies — •Christian Zeitz1, Stefan Fünfschilling2, Samuel Grandthyll1, Jörg Schmauch1, Frank Müller1, Mathias Werth1, and Karin Jacobs1 — 1Saarland University, Department of Experimental Physics, D-66041 Saarbrücken — 2Institute for Ceramics in Engineering, D-76131 Karlsruhe
Due to its biocompatibility, hydroxyapatite (HAP) has become a versatile material for various biomedical applications. However, a comprehensive explanation for the cell or tissue interactions with HAP is still missing, as is e.g. the influence of surface roughness or fluoridation. One of the obstacles for fundamental studies is the preparation of suitable HAP samples, which exhibit usually a rough and porous surface that is hard to prepare in a reproducible manner. These types of samples are moreover unsuitable for many surface science analysis methods such as x-ray photoelectron spectroscopy (XPS) or atomic force microscopy (AFM). We therefore have developed a preparation procedure that allows the fabrication of locally smooth (RMS roughness < 1 nm) and dense HAP surfaces (without open porosity).