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Mechanochemically-Activated Solid-State Synthesis of Borate-Substituted Tricalcium Phosphate: Evaluation of Biocompatibility and Antimicrobial Performance
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DOI：10.3390/molecules30071575.png)
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Abstract
En 中文
Current research in bone tissue engineering is focused not only on basic parameters of the materials, such as biocompatibility and degradation rate but also on intrinsic osteogenic and antimicrobial properties, essential to provide a rapid tissue regeneration without negative effects due to periprosthetic infections, that may result in revision surgeries. One of the major strategies to enhance the osteogenic and antimicrobial performance of calcium phosphates is the ionic substitution, in particular, with magnesium and borates. In this study, we focused on the synthesis of boron-substituted tricalcium phosphate (B-TCP) with a target of 5 mol.% substitution via the solid-state synthesis with mechano-activation. Synthesis from raw precursors, without the preliminary brushite wet precipitation, led to the primary phase of beta-TCP, which was proved by the XRD analysis. According to the IR-spectroscopy and 31P NMR analysis, boron substitution occurred in the synthesized sample. The developed material showed a modest antibacterial performance against E. coli, with 13.5 +/- 5.0% growth inhibition, and E. faecalis, with 16.7 +/- 5.5% inhibition. The biocompatibility of beta-TCP and B-TCP was tested through the MTT assay and osteogenic differentiation of the mesenchymal stromal cells. The proposed synthesis approach can be useful for the fabrication of B-TCP ceramics for bone tissue engineering.
Keywords:
bone tissue engineering
tricalcium phosphate ceramics
borate-substituted tricalcium phosphate
antimicrobial properties
biocompatibility
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