A comparative study of ultrastructures of the interfaces between three kinds of bioactive bone cement and bone

摘要

We have developed a bioactive bone cement which consists of apatite and wollastonite containing glass-ceramic (AW-GC) powder and bisphenol-a-glycidyl methacrylate (Bis-GMA)-based resin. In this study, we made three types of cement (designated AWC, HAC and TCPC) consisting of either AW-GC, hydroxyapatite (HA) or beta -tricalcium phosphate ( beta -TCP) powder as the inorganic filler and Bis-GMA-based resin as the organic matrix. These cements were implanted into rat tibiae and cured in situ. Specimens were prepared 2, 4 and 8 weeks after the operation and observed using transmission electron microscopy.