Abstract
Aim This study aims to comparatively evaluate the stress distribution and deformation in class II cavities restored with EverX posterior and ActivaTMBioactive restorative material using three-dimensional finite element analysis. Methods On a mandibular first molar tooth model, features of a class II mesio-occlusal cavity were designed. Following the application of EverX Posterior and ActivaTMBioactive, the model was subjected to a 600 N static occlusal load. Three-dimensional finite element analysis was used to analyze the distribution of occlusal stresses among the remaining components and restorative materials. von Mises and maximum principal stresses were evaluated and compared. Results von Mises and maximum principal stresses of ActivaTMBioactive components were higher compared to the control group and EverX Posterior model. ActivaTMBioactive restorations had absorbed more stresses within the material rather than distributing it to enamel and dentin than EverX Posterior material. Also, deformation was extremely high in the ActivaTMBioactive model, which may be because of less stiffness of the material. Conclusion EverX posterior has a higher capacity to bear stresses in stress-bearingareas than ActivaTMBioactive Restorative.
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