Abstract
Calcium silicate (CaSiO(3)) is regarded as a potential bioactive material. However, its poor chemical stability and cytocompatibility limits its biological applications. The aim of this study is to incorporate Titanium (Ti) into CaSiO(3) to produce a ceramic with improved chemical stability and biological properties. Sphene (CaTiSiO(5)) ceramics were prepared by sintering sol-gel-derived CaTiSiO(5) powder compacts and their chemical stability was assessed by measuring the ions released and weight loss after soaking CaTiSiO(5) in simulating body fluid for 1, 3, 7, and 14 days. Results indicated that CaTiSiO(5) has a significantly improved chemical stability, compared with CaSiO(3). The ability of CaTiSiO(5) ceramics to support human bone-derived cells (HBDC) attachment, proliferation, and differentiation was assessed using scanning electron microscopy, MTS, and alkaline phosphatase activity assays, respectively. CaTiSiO(5) ceramics supported HBDC attachment and significantly enhanced their proliferation and differentiation, compared with CaSiO(3) ceramics. Taken together, this study demonstrates that the newly developed CaTiSiO(5) ceramics possess excellent chemical stability and bioactivity, suggesting their potential use in skeletal tissue regeneration and as coating onto currently available orthopedic/dental implants.
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