Finite element analysis of quasistatic and fatigue failure of post and cores

Non-linear Viscoelastic Finite Element Analysis of the Effect of the Length of Glass Fiber Posts on the Biomechanical Behaviour of Directly Restored Incisors and Surrounding Alveolar Bone

“…In post and core restorations, stress distribution within the structure is multiaxial, not uniform, and depending on the magnitude and direction of the applied external load 5) . Type of external loading, geometry of structure, and residual stresses are some of the causes of multiaxial stress distributions 6) . Furthermore, the mechanical behavior of post and core-treated teeth is influenced by the characteristics of the interfaces and the rigidity of the materials 7) .…”

Three-dimensional finite element modeling from CT images of tooth and its validation

“…The results of FE analysis require experimental validation, due to the effects of the FE model assumputions 16,17) . In the field of tooth biomechanics, however, there are few reports on the validation of FE models of the teeth [18][19][20][21][22][23][24][25] .…”

“…More recently, several computer-aided techniques to extract the geometry have become commercially available with the industrial development of 3D image processing and reverse engineering techniques, facilitating the construction of FE models [11][12][13][14][15] . Validation of the FE model, one of the important problems in FE analysis 17,18) , has been previously reported by experimental verification through comparison of the results with those of laboratory or clinical tests of the teeth [18][19][20][21][22][23][24][25] . It is possible to compare the strain calculated in FE models and experimentally measured results using strain gauges, although the process is very difficult and tedious.…”

Avaliação dos ensaios de microtração, push-out e pull-out: resistência de união entre pino de fibra e dentina radicular, análise de elementos finitos e microscopia confocal

“…Entretanto os modelos utilizados para a análise de elementos finitos necessitam de validação experimental. Esta validação deve ser feita com propósito decisivo (123,146) , como foi realizado no presente estudo.…”

“…Resultados de estudos de análises de elementos finitos sem validação laboratorial devem ser vistos com certa ressalva, especialmente no caso específico da dentina, a qual sua anisotropia, causada pelos túbulos dentinários, dificilmente pode ser considerada e ou modelada como material isotrópico (146) .…”