2016
DOI: 10.1016/j.dental.2016.06.019
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Descriptions of crack growth behaviors in glass–ZrO2 bilayers under thermal residual stresses

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Cited by 12 publications
(8 citation statements)
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“…However, it is important to note that the critical stress fracture of zirconia is so high that this stress difference observed between the groups will first cause the crown fracture when made in the other materials 4,18 . This is also due to the polycrystalline structure of this material and not only to the pure elastic modulus 20 . Due to zirconia's high fracture toughness, the evaluated failure criteria was not the catastrophic failure of the crown, but the displacement of the prosthetic piece due to adhesive strength.…”
Section: Discussionmentioning
confidence: 99%
“…However, it is important to note that the critical stress fracture of zirconia is so high that this stress difference observed between the groups will first cause the crown fracture when made in the other materials 4,18 . This is also due to the polycrystalline structure of this material and not only to the pure elastic modulus 20 . Due to zirconia's high fracture toughness, the evaluated failure criteria was not the catastrophic failure of the crown, but the displacement of the prosthetic piece due to adhesive strength.…”
Section: Discussionmentioning
confidence: 99%
“…The VM9 FC specimens failed long before their slow‐cooling counterparts (VM9 SC), highlighting the deleterious effect of the higher‐magnitude residual tensile stresses locked inside the material during the cooling phase. It has been recently demonstrated that for the radial component of stress, compressive stresses arising from the mismatch in CTE between layers dominate in the vicinity of the interface and are responsible for the crack deflection observed inside the veneer at a certain distance from the interface (Fig. A,B).…”
Section: Discussionmentioning
confidence: 99%
“…Soon after their introduction, however, the occurrence of unusually high fracture rates of the veneer layer (so‐called chippings) attracted the attention of researchers and manufacturers, leading to a myriad of studies in the dental materials field. The outcome of most of this research pointed to the development of high‐magnitude residual tensile stresses as the main cause for the observed fractures .…”
mentioning
confidence: 89%
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“…indentação 56 e métodos de birrefringência 57,58 . No entanto, estudos que usaram o método de hole-drilling em espécimes planos sob resfriamento lento com a discrepância positiva de CETL relatou compressão superficial 50,59 .…”
Section: Análise Por Elementos Finitos E Influência Da Geometria Em Estudos De Trtsunclassified