Evaluation of fracture and distortion strength of certain plastic materials used in non-cariogenic cervical lesion restoration finite element analysis study

Authors: T. Tarcă, S.Andrian, Gianina Iovan, C. Topoliceanu, Diana Lăcătuşu, St. Lăcătuşu


Three-dimensional modeling and finite element analysis may be used in various dentistry fields. The main purpose of dental therapy research that uses finite element analysis (FEA) is to develop and experimentally validate an original analogical model and an associated digital model.Aim The study analyzed the internal stresses and the distortion of the restorative materials subjected to specific para-axial forces, in a mandible canine. The obtained values were compared with the specific parameters of the restorative materials (elasticity mode, Poissons constant). Results and discussions. The highest value of internal stresses occurred in cervical composite resin restorations, while the lowest was noticed in dental amalgam. The study revealed a direct relation between the value of the elasticity modulus of the restorative materials and the value of the internal stresses occurring within the mass of the restorative materials subjected to specific para-axial forces. At the same time, the highest distortion strength was found in dental amalgam restorations, while the lowest distortion strength was noticed in glass-ionomer cement restorations. Conclusions. Finite element analysis studies allow the development of a database able to predict crack or fracture risks of crown restoration materials, depending on the type of material used and on the direction and values of the axial and para-axial forces acting on dental structures.

  • crown restoration materials
  • ervical dental caries
  • finite element analysis study
  • non-cariogenic cervical lesions