Finite element analysis of dentin/adhesive interface accounting for micro-scale geometrical and mechanical properties.

摘要

Now-a-days, resin-based composite materials are being used as amalgam substitutes for tooth restorations. But there is a risk of decay of the tooth with amalgam substitutes, which is a result of the minute openings that are unavoidably associated, not only with the nature of the operative technique but also with the bond formed at the dentin/adhesive interface(d/a). The inconsistency in adhesion of the composite material to the dentin, results in premature failure of the restorative material at the d/a interface. In order to achieve a reliable analysis and to understand the effect of global loading on the dentin/adhesive interface, global/local analysis of the dentin/adhesive interface is performed. The objective of this study is to investigate the micromechanical stress distribution at the d/a interface using finite element (FE) analysis. This study will provide insight regarding failure initiation in composite restorations under loading conditions that simulate clinical function.