Finite Element Analysis of Different Superstructure Materials in a Single Distal Implant Restoration

The aim of this study was to evaluate the influence of different superstructure materials on biomechanical stress/strain distributions in the supporting bone around a single distal implant and adjacent natural teeth using a finite element analysis. Two-dimensional finite element models of a distal single implant, first molar, and second premolar in the mandible and their antagonists in the segmental maxilla were constructed. Acrylic resin and porcelain superstructure materials were used in this study. Static loads of 100~500 N at 100-N increments were applied to simulate the masseter muscle force. Results showed that under static loading, the superstructure with a lower elastic modulus like resin could cause shear stress/strain to the adjacent teeth. Under the conditions in this study, it was concluded that an implant superstructure prepared with lower-elastic-modulus material may help share the force with adjacent teeth and avoid higher stresses/strains generated at the implant-bone interface of single distal implants.

並列關鍵字

superstructure material ； single implant ； finite element analysis

國際替代計量

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