Finite Element Analysis of Fiber-reinforced Fixed Partial Dentures

Abstract

Two-dimensional finite element models were created for a three-unit posterior fixed partial denture.An experimental resinimpregnated glass fiber was used as the fiber-reinforced composite (FRC) for the framework. The FRC was evaluated using varying combinations of position and thickness, alongside with two types of veneering composite.A load of 50 N simulating bite force was applied at the pontic in a vertical direction.Tensile stress was examined using a finite element analysis program.Model without FRC showed tensile stress concentrations within the veneering composite on the cervical side of the pontic -from the connector area to the bottom of the pontic. Model with FRC at the top of the pontic had almost the same stress distribution as the model without FRC. Models with 0.4-0.8 mm thick FRC positioned at the bottom of the pontic showed maximum tensile stresses reduced by 4-19% within the veneering composite.

Investigation of distortions around the cervical area of teeth restored with two kinds of crown materials

“…However, at loads of 75 N and beyond, which exceeded the range of mean masticatory forces, there seemed a possibility for stress to concentrate at the luting agent which is interface of the crown and root in MC. The Young's modulus of HC crowns and MC crowns used in this study were 21.0 GPa 25) and 86.0 GPa 26) respectively. Those of dentin, glass fiber post, composite resin core, and RC were 15.0 GPa 27) , 29.2 GPa 2) , 12.0 GPa 28) , and 18.0 GPa 25) respectively.…”

“…The Young's modulus of HC crowns and MC crowns used in this study were 21.0 GPa 25) and 86.0 GPa 26) respectively. Those of dentin, glass fiber post, composite resin core, and RC were 15.0 GPa 27) , 29.2 GPa 2) , 12.0 GPa 28) , and 18.0 GPa 25) respectively. Stress concentration occurs at the interface between materials with different Young's modulus.…”

Nonlinear Stress Analysis of Titanium Implants by Finite Element Method

“…Assuming that abutment and implants are connected by friction, the compact bone's basal area was fixed. Table 1 shows the values of the physical properties of materials used for elasticity analysis [11][12][13] . Grade 2 (G2) and grade 4 (G4) pure titanium and Ti-6Al-4V alloy were used as original implant materials.…”

Stress Analysis of Clasps Made of Glass Fiber-reinforced Composite Material Using Three-dimensional Finite Element Method: Influence of Shape in Cross and Longitudinal Sections of Circumferential Clasp Arms

“…This is chiefly because FEM is an optimal means to analyze the structures of anisotropic composites like FRC 5) . However, for stress analysis using FEM, two-dimensional analyses are more frequently used 7,[11][12][13]15,16) than three-dimensional analyses 8,14) . Moreover, metal has been generally used as an isotropic material for clasps 6,[17][18][19] .…”

“…9,10) . Furthermore, FEM has been employed to investigate if FRC materials could be applied clinically for crowns, bridges, or endodontic posts 7,8,[11][12][13][14][15][16] . This is chiefly because FEM is an optimal means to analyze the structures of anisotropic composites like FRC 5) .…”