Papers by Author: Lei Chen

Abstract: Calcium silicate (CS), the recent developed biodegradable ceramic, shows potential in stimulating bone regeneration. However, the rapid degradation restricts its further application, that is, the cytotoxicity is highly suspicious. In this study, the attempt with the addition of strontium by partially replacing the site of calcium shows appropriate, not only enhancing the bioactivity of CS, but also promoting its biocompatibility. Thus, the modification of biomaterial by strontium seems to be an effective approach for biological application.

Abstract: In the present study, Ca2P2O7-doped β-Ca3(PO4)2 bioceramics were fabricated by pressureless sintering process. The effect of Ca2P2O7 on the sintering ability, mechanical strength and degradability of the ceramics were investigated. The results showed that the Ca2P2O7 could apparently decrease the sintering ability and mechanical properties of β-Ca3(PO4)2. Moreover, the relative density and mechanical strength of the sintered samples decreased gradually with the increase of the Ca2P2O7 additive amount. However, the dissolution rate of the samples increased with the increase of the Ca2P2O7 additive amount.