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Bioactive composite bone cement based on α‐tricalcium phosphate/tricalcium silicate
Author(s) -
MorejónAlonso Loreley,
Ferreira Oscar Jacinto Bareiro,
Carrodeguas Raúl Garcia,
dos Santos Luis Alberto
Publication year - 2012
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.31926
Subject(s) - simulated body fluid , compressive strength , biocompatibility , cement , scanning electron microscope , composite number , materials science , calcium silicate , composite material , hydrolysis , silicate , homogeneous , phosphate , bone cement , chemical engineering , chemistry , organic chemistry , metallurgy , physics , engineering , thermodynamics
Abstract Silicon compounds are known as bioactive materials that are able to bond to the living bone tissue by inducing an osteogenic response through the stimulation and activation of osteoblasts. To improve the bioactive and mechanical properties of an α‐Ca 3 PO 4 ‐based cement, the effects of the addition of Ca 3 SiO 5 (C 3 S) on physical, chemical, mechanical, and biological properties after soaking in simulated body fluid (SBF) were studied. The morphological and structural changes of the material during immersion were analyzed by X‐ray diffraction and scanning electron microscopy. The results showed that it is possible to increase the compressive strength of the cement by adding 5% of C 3 S. Higher C 3 S contents enhance bioactivity and biocompatibility by the formation of a dense and homogeneous hydroxyapatite layer within 7 days; however, compressive strength decreases drastically as a consequence of delayed hydrolysis of α‐Ca 3 (PO 4 ) 2 . An increment in setting times and degradation rate of composites containing C 3 S was also observed. © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2012.