Abstract
In designing the biomaterials, it is important to control their surface morphologies, because they affect the interactions between the materials and cells. We previously reported that porous calcium-deficient hydroxyapatite (HA) ceramics composed of rod-like particles had advantages over sintered porous HA ceramics; however, the effects of the surface morphology of calcium-deficient HA ceramics on cell behavior have remained unclear. Using a hydrothermal process, we successfully prepared porous calcium-deficient HA ceramics with different surface morphologies, composed of plate-like particles of 200–300, 500–800 nm, or 2–3 μm in width and rod-like particles of 1 or 3–5 μm in width, respectively. The effects of these surface morphologies on the behavior of osteoblast-like cells were examined. Although the numbers of cells adhered to the ceramic specimens did not differ significantly among the specimens, the proliferation rates of cells on the ceramics decreased with decreasing particle size. Our results reveal that controlling the surface morphology that is governed by particle shape and size is important for designing porous calcium-deficient HA ceramics.
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Acknowledgments
This research was partially supported by JSPS KAKENHI (21300175, 23760630). We are grateful for the experimental support of Prof. M. Kawashita of Tohoku University.
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Kamitakahara, M., Uno, Y. & Ioku, K. Behavior of osteoblast-like cells on calcium-deficient hydroxyapatite ceramics composed of particles with different shapes and sizes. J Mater Sci: Mater Med 25, 239–245 (2014). https://doi.org/10.1007/s10856-013-5063-6
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DOI: https://doi.org/10.1007/s10856-013-5063-6