Bone-Bonding Strength of two kinds of Polymethylmethacrylate-based Bioactive Bone Cement Containing bioactive Glass Beads or Glass-Ceramic Powder

摘要

ew have developed two types of polymethylmethacrylate (PMMA)-based bioactive bone cements containing bioactive glass beads (designated GBC) or apatite-wollastonite containing glass- ceramic powder designated AWC) as the filler. A new method was used to evaluate the bone- bonding strength of these bioactive bone cements. Two types of bioactive bone cements and PMMA cement were put in a frame attached to the smooth tibial cortex of the rabbit and polymerized in situ, thus minimizing mechanical interlocking at the interface. The load required to detach the cement from the bone was measured at 4, 8 and 16 weeks after implantation.