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Issue 15, 2017
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Injectable MnSr-doped brushite bone cements with improved biological performance

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Abstract

Good mechanical properties and high injectability are the major requirements to ensure widespread application of calcium phosphate cements (CPCs) as bone substitutes in minimally invasive surgeries. However, obtaining CPCs that exhibit a good compromise between these two properties as well as good biological performance is still a great challenge. This study presents novel solutions to improve these properties, which include (i) co-doping β-tricalcium phosphate (β-TCP) powder with Sr and Mn, and (ii) adding small amounts of saccharides (sucrose or fructose) to the setting-liquid solution. The combination of these two strategies enabled full injectability and significantly increased the wet compressive strength of CPCs in comparison to undoped or solely Sr-doped CPCs. Furthermore, the proliferative response of human MG63 osteoblastic cells, their rate of collagen-I secretion, and particularly their growth behaviour on the cement surfaces were also enhanced. The overall improved relevant properties of Mn/Sr co-doped CPCs with added sucrose, including in vitro biological performance, renders them very promising materials for bone regeneration and tissue engineering.

Graphical abstract: Injectable MnSr-doped brushite bone cements with improved biological performance

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Publication details

The article was received on 30 Nov 2016, accepted on 13 Mar 2017 and first published on 15 Mar 2017


Article type: Paper
DOI: 10.1039/C6TB03119F
Citation: J. Mater. Chem. B, 2017,5, 2775-2787
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    Injectable MnSr-doped brushite bone cements with improved biological performance

    P. M. C. Torres, A. Marote, A. R. Cerqueira, A. J. Calado, J. C. C. Abrantes, S. Olhero, O. A. B. da Cruz e Silva, S. I. Vieira and J. M. F. Ferreira, J. Mater. Chem. B, 2017, 5, 2775
    DOI: 10.1039/C6TB03119F

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