Abstract
To modify the properties of PMMA/MMA-TBB resin, the influences of blending PMMA small beads (MB8) with a pulverized PMMA powder (SB) were studied by measuring setting time, working time, cement film thickness, and bond strength to dentin. The MB8/SB blends demonstrated the following qualities compared with SB powder alone :(1) setting time and working time were increased ;(2) film thickness remained thin over a long period ;(3) mean bond strength to dentin was the same but the lower limit of the range was increased. Thus, the PMMA blends were suggested to be a useful MMA-TBB resin cement providing improved clinical performance.
