Finite Element Analysis (FEA) is a numerical technique used in many areas of engineering and also is used in the field of dentistry for various applications. One of the advantages of FEM is its ability to handle structural analysis on complex geometries. For this reason, it allows us to analyze the mechanical behavior of dental structures that may be difficult or impossible to solve analytically and experimentally.
In this study, stress distributions of a primary molar tooth restored with a stainless steel crown (SSC) using resin and glass ionomer luting types of cement were evaluated by FEA. One solid tooth model was prepared with the help of the SolidWorks program and this model consists of enamel, pulp, cement layer, and SSC. Two different luting types of cement were tested in the study: Model A (the teeth model with SSC using self-cure adhesive resin cement, and Model B (the teeth model with SSC using glass ionomer cement). For the simulation, the Ansys Workbench program was used and 330 N of vertical and oblique load was applied to simulate the maximum bite force and lateral forces in occlusal contact areas on two models.
According to FEA results, the maximum von Mises stress value was observed in the area of force application and the generally occlusal contact areas for all models. The higher stress values under both vertical and oblique loading were found in Model A as 478.09 and 214.62 MPa, respectively. The lower stress values under both vertical and oblique loading were found in Model B as 220.06 and 198.72 MPa, respectively.
Considering the results of the study, the elastic modulus of luting cement played an important role in the success of SSC restorations in the primary molar tooth. As the elastic modulus of the luting cement increased, the stress value caused by the occlusal force decreased.
ORCID NO: 0000-0003-4900-2739
Anahtar Kelimeler: Finite element analysis, Stainless steel crown, Resin cement, Glass ionomer cement, Primary teeth