Abstract
Magnesium (Mg) is light, has biocompatibility, and has mechanical properties close to those of natural bone. However, pure Mg severely corrodes in a physiological environment, which may result in fracture prior to substantial tissue healing. In this study, the Mg surface was modified by depositing a thin polymeric film containing COOH, NH2, and OH groups through plasma polymerization of acrylic acid, allyl amine, and allyl alcohol in order to improve its anticorrosion and bioactive properties. The –COOH group had a significant effect on bonelike apatite formation compared with –NH2 and –OH. It was also concluded that a bonelike-apatite formed COOH/Mg surface was more effective for reducing biodegradation rate than the other surfaces. The results of in vitro cell test revealed significantly enhanced cell proliferation and differentiation on the COOH/Mg and NH2/Mg surfaces compared with other surfaces.
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