Computational analysis of stresses in posterior molar dental reconstructions using the Finite Element Method
DOI:
https://doi.org/10.65093/aci.v16.n4.2025.43Keywords:
composites, marginal microleakage, polymerization shrinkage, finite element methodAbstract
Marginal microleakage in dental restorations compromises their durability. Some of the factors contributing to its occurrence include: the polymerization shrinkage of the restorative resin, its mechanical properties (modulus of elasticity), the cavity design (varying restoration depths), and occlusal loads (their magnitude and application method). The aim of this work is to analyze, through the Finite Element Method, the biomechanical behavior of a molar with a Class I cavity restoration in order to evaluate the influence of these factors on the stresses developed within it. A sequential methodology is employed, allowing for the analysis of each variable's influence and aiding the interpretation of the results. The maximum principal stresses are obtained for each case, and a failure criterion is applied. The results indicate that polymerization shrinkage is the primary factor leading to material failure.
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