Stress amplifications in dental non-carious cervical lesions
Guimaraes JC, Soella GG, Durand LB, Horn F, Baratieri LN, Monteiro S, Belli R (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Publisher: Elsevier
Book Volume: 47
Pages Range: 410-6
Journal Issue: 2
DOI: 10.1016/j.jbiomech.2013.11.012
Abstract
This study aims to investigate the influence of the presence, shape and depth of NCCLs on the mechanical response of a maxillary second premolar subjected to functional and non-functional occlusal loadings using 3-D finite element (FE) analysis. A three-dimensional model of a maxillary second premolar and its supporting bone was constructed based on the contours of their cross-sections. From the sound model, cervical defects having either V- or U-shapes, as found clinically, were subtracted in three different depths. The models were loaded with 105 N to simulate normal chewing forces according to a functional occlusal loading (F1) vertically applied and two non-functional loadings (F2 and F3) obliquely oriented. Two alveolar bone crest heights were tested. Ansys(TM) FE software was used to compute stress distributions and maximum principal stress for each of the models. The presence of a lesion had no effect on the overall stress distribution of the system, but affected local stress concentrations. Non-functional loadings exhibited tensile stresses concentrating at the cervical areas and root surfaces, while the functional loading resulted in homogeneous stress distributions within the tooth. V-shaped lesions showed higher stress levels concentrated at the zenith of the lesion, whereas in U-shaped defect stresses concentrated over a wider area. As the lesions advanced in depth, the stress was amplified at their deepest part. A trend of stress amplification was observed with decreasing bone height. These results suggest a non-linear lesion progression with time, with the progression rate increasing with patient's age (deeper lesions and lower bone support).
Authors with CRIS profile
Involved external institutions
Federal University of Espírito Santo / Universidade Federal do Espírito Santo (UFES)
Brazil (BR)
Federal University of Santa Maria / Universidade Federal de Santa Maria (UFSM)
Brazil (BR)
Federal University of Santa Catarina / Universidade Federal de Santa Catarina (UFSC)
Brazil (BR)
Brazil (BR)
Federal University of Santa Maria / Universidade Federal de Santa Maria (UFSM)
Brazil (BR)
Federal University of Santa Catarina / Universidade Federal de Santa Catarina (UFSC)
Brazil (BR)
How to cite
APA:
Guimaraes, J.C., Soella, G.G., Durand, L.B., Horn, F., Baratieri, L.N., Monteiro, S., & Belli, R. (2014). Stress amplifications in dental non-carious cervical lesions. Journal of Biomechanics, 47(2), 410-6. https://doi.org/10.1016/j.jbiomech.2013.11.012
MLA:
Guimaraes, Jackeline Coutinho, et al. "Stress amplifications in dental non-carious cervical lesions." Journal of Biomechanics 47.2 (2014): 410-6.
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