Effect of Reinforced Self-Cured Acrylic Resin on Flexural Strength

Figure 3

Representative SEM images (x500, x1000 magnification) showing the fractured surface of (a) self-cured acrylic resin (control group 1). (b) 2% short E-glass fiber reinforced self-cured acrylic resin (group 2). (c) 1% short E-glass fiber reinforced self-cured acrylic resin (group 3). (d) 0.5% short E-glass fiber/ultra-high-molecular-weight polyethylene filler-reinforced self-cured acrylic resin (group 4). (e) 1% short E-glass fiber/ultra-high-molecular-weight-polyethylene filler-reinforced self-cured acrylic resin (group 5). (f) 1% ultra-high-molecular-weight polyethylene filler-reinforced self-cured acrylic resin (group 6). (g) 2% ultra-high-molecular-weight polyethylene filler-reinforced self-cured acrylic resin (group 7). The white arrow indicates the reinforcement particles, the yellow arrow indicates the area that reinforced particle breakdown or that is dislodged, and the green arrow indicates the area of the cohesive failure of the resin.