期刊
JOURNAL OF MATERIALS CHEMISTRY B
卷 5, 期 15, 页码 2775-2787出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6tb03119f
关键词
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资金
- FEDER funds through the Operational Programme Competitiveness Factors (COMPETE 2020)
- Portuguese Foundation for Science and Technology (FCT)
- FCT for the doctoral grant [SFRH/BD/62021/2009]
- FEDER funds through QREN-Aviso [SAIECT-IEC/2/2010]
- Operacao [NORTE-07-0162-FEDER-000050]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/62021/2009] Funding Source: FCT
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 beta-tricalcium phosphate (beta-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.
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