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A three-dimensional model of finite elements in order to investigate the effect produced by occlusion forces on both distribution and magnitude of the tensional field on an upper premolar is hereby presented. Thus, defining from a tensional point of view, which is the situation of the most critical occlusion loading on dental enamel capable to produce a non-cavity lesion is intended. By using finite linear hexahedral elements and processing the models through SAMCEF software, a static linear numerical analysis is performed, considering that premolar is isotropic and homogeneous. Seven load states associated to occlusion force of 170 N are defined and the distribution and magnitude of tensional fields on premolar are also investigated. Numerical results allow concluding that maximum tensions on premolar tend to concentrate around cervical area, reaching their maximum values when the 170 N load acts inclined 45o from vertical. Relevance of current research lies on the fact that both distribution and area where tensional fields tend to concentrate and reach maximum values has been numerically proved. These values are coincident with tooth areas where non-cavity lesions are clinically observed.

ANÁLISIS COMPUTACIONAL DE LESIONES CERVICALES NO CARIOSAS EN UN PREMOLAR SUPERIOR