The aim of the study is to underline the biomechanical behavior of resin-composite and ceramic inlays restorations, dental structures and luting cements during ertical loading. Six finite-element models of class I cavity restorations of inferior premolar were created.
Combinations of each type of inlay restoration (ceramic and resin-composite) with different types of luting cements (zinc polycarboxylate, glass-ionomer resin – Fuji and resin-composite – Panavia) have been simulated. The 3D models were created in Rhinoceros, Nurbs modeling for Windows and the finite element analysis was conducted in Cosmos DesignStar. Occlusal vertical loading of 400 N was simulated on the middle of the restorations of the 3D models. The results of the study confirms the clinical observations regarding the correlation between Young
modulus of luting cements, inlays restorations and dental structures. Stress accumulation at the inside of the ceramic inlay and better stress dissipation to the dental walls for resin-composite inlay were noticed. In terms of luting cements, the higher the elastic modulus values the poorer the redistribution of the stress into the cavity was.
- FEA
- inlay
- LUTING CEMENTS