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Hydroxyapatite additive influenced the bioactivity of bioactive nano-titania ceramics and new bone-forming capacity

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An Erratum to this article was published on 20 February 2013

Abstract

Bioceramics plays an important role in bone-substitutes. In this study, titania porous ceramics with excellent bioactivity were prepared using hydroxyapatite (HA, 10 vol.% contents) as a grain growth inhibitor. The pure TiO2 porous ceramics were also prepared as a control. After sintered at 1,000 °C with a pressureless sintering method, the particle size of the pure TiO2 and TiO2/HA (10 vol.%) porous ceramics were 450 and 310 nm, respectively. Each of the porous ceramics presented numerous pores, which were cross-connected. The size of the pores ranged from 100 to 300 μm. There were also profuse micropores inside the pore wall and between the particles. A SBF soaking experiment demonstrated that the HA additive played an important role in promoting apatite formation. The cell proliferation demonstrated that osteoblasts on the TiO2/HA (10 vol.%) porous ceramics proliferated faster than that on the pure TiO2 ceramics. The histological sections and EDX assay results of the two porous ceramics also illustrated that TiO2/HA (10 vol.%) composite ceramics combined with Ca and P elements induced much better apatite formation than that of the pure TiO2 ceramics. These results indicated that titania ceramics combined with HA holds great promise for bone-substitutes.

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Acknowledgments

This work was supported by the National Basic Research Program of China (2011CB964701), National Natural Science Foundation of China (81000670), and the key scientific and technological projects of Chongqing (2011AC5025).

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Correspondence to Shiwu Dong.

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Li, Z., Yang, X., Guo, H. et al. Hydroxyapatite additive influenced the bioactivity of bioactive nano-titania ceramics and new bone-forming capacity. J Nanopart Res 14, 1145 (2012). https://doi.org/10.1007/s11051-012-1145-5

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  • DOI: https://doi.org/10.1007/s11051-012-1145-5

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