Agradecimentos: The authors would like to thank São Paulo Research Foundation (FAPESP Grant no. 2005/04746-0) for the financial support. MPG acknowledges the support provided by the Spanish Government through Project MAT2015-65601-R (MINECO/FEDER, UE), and the Generalitat de Catalunya through the...

Agradecimentos: The authors would like to thank São Paulo Research Foundation (FAPESP Grant no. 2005/04746-0) for the financial support. MPG acknowledges the support provided by the Spanish Government through Project MAT2015-65601-R (MINECO/FEDER, UE), and the Generalitat de Catalunya through the ICREA Academia Award. RGC recognizes the support from project MAT2013-48426-C2-1-R from Ministry of Economy and Competitiveness of Spain

Silicon substituted calcium phosphates have been widely studied over the last ten years due to their enhanced osteogenic properties. Notwithstanding, the role of silicon on α-TCP reactivity is not clear yet. Therefore, the aim of this work was to evaluate the reactivity and the properties of...

Silicon substituted calcium phosphates have been widely studied over the last ten years due to their enhanced osteogenic properties. Notwithstanding, the role of silicon on α-TCP reactivity is not clear yet. Therefore, the aim of this work was to evaluate the reactivity and the properties of Si-α-TCP in comparison to α-TCP. Precursor powders have similar properties regarding purity, particle size distribution and specific surface area, which allowed a better comparison of the Si effects on their reactivity and cements properties. Both Si-α-TCP and α-TCP hydrolyzed to a calcium-deficient hydroxyapatite when mixed with water but their conversion rates were different. Si-α-TCP exhibited a slower setting rate than α-TCP, i.e. kSSA for Si-TCP (0.021 g·m− 2·h− 1) was almost four times lower than for α-TCP (0.072 g·m− 2·h− 1). On the other hand, the compressive strength of the CPC resulting from fully reacted Si-α-TCP was significantly higher (12.80 ± 0.38 MPa) than that of α-TCP (11.44 ± 0.54 MPa), due to the smaller size of the entangled precipitated apatite crystals

FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP

2005/04746-0

Fechado