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Surface modification can effectively improve the biological activity of Ti, which is currently a popular research topic. In this study, we applied plasma electrolytic oxidation (PEO) technology to prepare a porous Mg-TiO2 coating on the surface of a Ti sheet. Then, we observed the adhesion and proliferation of bone marrow mesenchymal stem cells (BMSCs) on the surface of the Mg-TiO2 coating. The results showed that the Mg-TiO2 coating had a porous structure, and there was a uniform distribution of Mg on the surface and in the pores of the coating. The porous Mg-TiO2 coating showed good cytocompatibility and no obvious cytotoxicity. Significantly more BMSCs adhered to and proliferated on its surface than on pure Ti (p < 0.05). In conclusion, a Mg-TiO2 coating with a good surface morphology and good biocompatibility and bioactivity was prepared on a Ti surface by plasma technology and may have potential for clinical applications.
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Ni et al. (2022) studied this question.
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