"Marginal Adaptation and Fracture Resistance of Two CAD/CAM Occlusal Veneers"

Abstract

The results were different from those obtained by Güngör and Nemli (2018) (88) , who studied the fracture resistance of ceramic posterior crown restorations. They found that Lithium disilicate crowns were significantly higher than flexible nanoceramic ones under clinically approximated conditions. The results were also against the studies done comparing both materials. Kensara et al (2016) (134) who studied the effect of both static and cyclic loads on the fracture toughness. The results showed higher values for lithium disilicate (IPS e.max CAD) compared to the flexible nano ceramic (Cerasmart). Moreover, Shafter et al (2017) (135) studied the effect of cyclic loading on flexural strength of chairside CAD/CAM materials. It was found that flexible nano ceramic exhibited lower values compared to the lithium disilicate