The effects of non carious cervical lesions - morphology, load type and restoration - on the biomechanical behavior of maxillary premolars: a finite element analysis

Authors

  • Paulo Vinícius Soares Universidade Federal de Uberlândia
  • Giovana de Almeida Milito Universidade Federal de Uberlândia
  • Fabrícia Araújo Pereira Universidade de São Paulo
  • Lívia Fávaro Zeola Universidade Federal de Uberlândia
  • Marina Ferreira de Lima Naves Universidade Federal de Uberlândia
  • Vítor Laguardia Guido Faria Universidade Federal de Uberlândia
  • Alexandre Coelho Machado Universidade Federal de Uberlândia
  • Paola Gomes Souza Universidade Federal de Uberlândia
  • Bruno Rodrigues Reis Universidade de São Paulo

Abstract

The aim of the present study was to analyze the effects of different types of non-carious cervical lesions (NCCLs) and their morphologies in premolars, restored (or not) with composite resin, on the application three occlusal loadings. The hypothesis was that differing NCCL morphologies, loading types and restoration with composite resin affect stress distribution patterns. A two-dimensional linear Finite Element Analyses (FEA) simulated a healthy tooth model (H) with dental structures including: dentin, pulp, enamel, periodontal ligament, cortical bone, and trabecular bone. Three NCCL morphological models were examined: Mixed (MI), Sauce (SA) and Wedged-shape (WS). All types of lesions were analyzed with and without restoration. The models were considered homogeneous and elastic. In each model three load types: 100N: vertical load (VL), buccal load (BL) and palatine load (PL) were applied. The Maximum Principal Stress values were analyzed. The quantitative analysis of stress (MPa) was identified at five points of the NCCLs according to the morphology of the lesion type: initial point, superior wall, center of lesion, inferior wall and final point. It was found that NCCLs restored with composite resin exhibited stress distribution patterns similar to the healthy tooth model, independent of morphology and load. The Palatine Load was responsible for providing the highest values of accumulated tensions on the NCCL. The highest values of tensile stress on NCCL areas were found in the models without composite resin restoration, which had received PL. It was concluded that the different NCCL morphologies had little effect on stress distribution patterns. The major factors that affected the biomechanical behavior of premolars presenting NCCL were load type and the presence of composite restoration.

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Published

2013-04-30

How to Cite

SOARES, P.V., MILITO, G. de A., PEREIRA, F.A., ZEOLA, L.F., NAVES, M.F. de L., FARIA, V.L.G., MACHADO, A.C., SOUZA, P.G. and REIS, B.R., 2013. The effects of non carious cervical lesions - morphology, load type and restoration - on the biomechanical behavior of maxillary premolars: a finite element analysis . Bioscience Journal [online], vol. 29, no. 2, pp. 526–535. [Accessed7 December 2022]. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/19544.

Issue

Section

Health Sciences