Biaxial flexural strength of the bilayered disk composed of ceria-stabilized zirconia/alumina nanocomposite (Ce-TZP/A) and veneering porcelain

Investigating the effect of the framework material, veneering technique and aging on flexural strength of core/veneered restorations

“…Considering the effect of the material's modulus of elasticity and the fact that materials having a more compatible modulus of elasticity are more likely to bend under load and distribute stresses more evenly, we can explain the significantly lower values of IPS e.max CAD veneered groups in our study (27) . IPS e.max CAD is a highly rigid material with an elastic modulus (95GPa).…”

“…A sample size calculation using a significance level of a=.05 and a power of b=.80 estimated a sample size of 20 using pilot data. Similar previous studies have used a similar sample size (27,28) . All specimens were designed to have a core thickness (0.7 mm) and a veneer thickness (0.8 mm).…”

Y-TZP, Ce-TZP and as-synthesized Ce-TZP/Al2O3 materials in the development of high loading rate digital light processing formulations

“…The origin of these defaults was related to the well-known low temperature degradation (LTD) mechanism encountered when such a material is subject to a humid environment and exposed in the same time at moderate temperatures [4] , [6] , [7]. To overcome the Y-TZP issue present in the oral environment, zirconia polycrystals doped with ceria are thought to be interesting candidates according to their high hydrothermal stability [8] and fracture toughness (10)(11)(12)(13)(14)(15)(16)(17) MPa m 1/2 2 [9]). Nevertheless Ce-TZP materials with a doping content between 10-12 mol% exhibit a low strength at room temperature (500-800 MPa [9]) mainly due to a large grain size around 1 µm.…”