Abstract
To combine the self-setting property of \(\upalpha \)-calcium sulphate hemihydrate (\(\upalpha \)-CSH) with the bioactive property of bioactive glass (BG), BG was added into \(\upalpha \)-CSH to prepare \(\upalpha \)-CSH/BG composites. The in vitro bioactivity and cytocompatibility of the \(\upalpha \)-CSH/BG composites were assessed by soaking the composites in simulated body fluid (SBF) and co-culturing with the osteoblasts, respectively. Formation of a bone-like apatite layer on the composite surface was studied by X-ray diffraction (XRD), Fourier transform infrared spectrometry (FTIR), scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). Variations in ionic concentration and pH of the SBF solution were detected. The incorporation of BG into \(\upalpha \)-CSH, effectively compensated for the pH decrease caused by the dissolution of \(\upalpha \)-CSH and the ion exchange. Osteoblast-like cells (MG63) were cultured on the samples, and the MTT results confirmed that the composites containing BG were more favourable for the proliferation of these cells. Hence, \(\upalpha \)-CSH/BG composites might have great potential for the use as a bone regeneration material.
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Acknowledgements
This work was supported financially by the Doctoral Program of North Sichuan Medical College (No. CBY16-QD-02), the North Sichuan Medical College Scientific Research and Development Projects (No. CBY16-A-ZD02), and the key project of ‘Western Light’ Foundation of Chinese Academy of Sciences.
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Zheng, Y., Xiong, C., Zhang, D. et al. In vitro bioactivity evaluation of \(\upalpha \)-calcium sulphate hemihydrate and bioactive glass composites for their potential use in bone regeneration. Bull Mater Sci 41, 59 (2018). https://doi.org/10.1007/s12034-018-1558-6
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DOI: https://doi.org/10.1007/s12034-018-1558-6