Reinforcement effects of fiberglass on telescopic dentures using a three-dimensional finite element analysis and fracture test

Abstract

The purpose of this study was to evaluate the reinforcing effect of fiberglass on composite resin retainers of the telescopic dentures. A finite element method was used to assess the effect of the abutment height and the embedment of the fiberglass on the stress distributions of the retainers. The experimental retainers of Poly(methylmethacrylate), composite resin (CR) and the fiber-reinforced composite resin (FRC) were used in the fracture test. The fracture load of the FRC retainers were significantly greater than those of the other retainers. The embedment of the fiberglass reduced the stress at the upper surface of the CR retainers. The fracture origin in the CR retainers was seen on the upper surface, while that of the FRC was at the cervical region near the abutment. These results suggest that the change in the fracture pass by the fiberglass increased the fracture resistance of the CR retainer.

Fracture strength of composite fixed partial denture using bovine teeth as a substitute for human teeth with or without fiber-reinforcement

“…Fiber-reinforced inclusion on composite allows better stress distribution and dissipation in the structure in which it had been incorporated, thus decreasing and homogenizing stress transmission to the supporting teeth (18,19). In theory, the reinforcing effect of fiber fillers is not only based on stress transfer from polymer matrix to fibers but also on the behavior of individual fibers as crack stoppers (20).…”

“…The remaining tissues of the abutment teeth were subjected mainly to compressive or extremely low tensile forces (18). The inclusion of fibers at the tensile side of composite resin specimens improves flexure properties (8,19), what can justify the highest values of fiberreinforced composite inlay Cpd fracture strength for both bovine and human groups. The efficient location for fiber reinforcement is at the tensile sites, such as in the base of the pontic (8,18).…”

Influence of glass fiber reinforcement and resin viscosity on the fracture strength of adhesive partial fixed prosthetic dentures

“…The efficient location for fiber reinforcement is at the tensile points, such as the pontic base [19,20]. The reinforcement with fiber inclusion enables a better tension distribution and dissipation of the structure in which it was incorporated, therefore decreasing the stress transmission and stress homogenization including the pontic teeth [19,21]. Theoretically, the effect of the fiber reinforcement is not only based on the stress transference from the matrix to the fibers, but also on the individual behavior of the fibers as paralyzing units of the cracks [22].…”

Optimum design for glass fiber-reinforced composite clasps using nonlinear finite element analysis

“…These are compared with the material's strength to predict its failure risk 17,31) . In this study, maximum compressive and tensile stresses were calculated by nonlinear FEA.…”

“…Hard resin and stainless steel were treated as elastic isotropic materials. The Young's modulus and Poissons' ratio, were set at 21 GPa and 0.27 17) , respectively, for hard resin and 200 GPa and 0.30 18) , respectively, for stainless steel.…”