Influence of Different Post-endodontic Restorations on the Survival Rate Against Fracture of Endodontically Treated Anterior Teeth Affected by Cervical Lesions with Pulpal Involvement: A Retrospective Clinical Study.

Objective: To compare the survival rate against fracture of endodontically treated anterior teeth (ETT) affected by cervical (class V) lesions with pulpal involvement restored with resin composite or a post/core and crown, and to identify the prognostic factors for fracture.

Methods: Dental records and radiographs of ETT affected by cervical lesions with pulpal involvement restored with resin composite or a post/core and crown during a recall period from 2009-2022 were selected according to the inclusion and exclusion criteria. The number of tooth fracture, the restorability after fracture and any possible risk factors were identified.

Flexural strength, fatigue life, and stress-induced phase transformation study of Y-TZP dental ceramic.

Objectives: Yttria partially-stabilized zirconia polycrystalline (Y-TZP) has been the subject of extensive research because of its high strength and toughness. The aim of this study was to evaluate the biaxial flexural strength, fatigue life, and to investigate in more detail on single cycle specimens, the pressure-induced phase transformation of a Y-TZP dental ceramic using Raman microspectroscopy.

Materials And Methods: Thirty standardized discs (15 x 1.

Fatigue and fracture properties of yttria partially stabilized zirconia crown systems.

Objectives: The purpose of this study was to test in vitro the fatigue and fracture properties of the Zirconia Everest core material after being veneered with a sintered or a heat-pressed veneer material.

Methods: Fifty zirconium copings were made using Kavo Everest ZS-blanks and the CAD/CAM technology. These were divided equally into two groups.

The biaxial flexural strength and fatigue property of Lava Y-TZP dental ceramic.

Objectives: The development of yttrium oxide partially stabilized zirconia (Y-TZP) has allowed the use of ceramic in load-bearing sites. The aim of this study was to evaluate and compare the biaxial flexural strength, hardness and fatigue life of colored and uncolored zirconia in the LAVAtrade mark system.

Materials And Methods: Eight groups (n=30) of standardized disc specimens (15mmx1.