title: Fractographic Study of the Interface Between Zirconia Y-TZP and Its Veneering Ceramic After Shear Strength Testing.
abstract: This study analyzed the shear strength and fracture characteristics of the interface between zirconia samples and their veneering ceramic compared with a metal-ceramic and a lithium disilicate glass-ceramic control group together with an assessment of the possible relationship between the fracture characteristics and the recorded shear strength. The greatest shear strengths corresponded to the lithium disilicate glass-ceramic control group followed by the metal-ceramic control group, with lesser strengths in the zirconia groups. Since the fractographic study showed cohesive-type failure to predominate in the zirconia samples, it is concluded that improvements are needed in the veneering ceramic and liner used in zirconia restorations.
authors.forename: Maria Victoria
authors.initials: MV
authors.lastname: López-Mollá
authors.forename: Amparo
authors.initials: A
authors.lastname: Martínez-González
authors.forename: Vicente
authors.initials: V
authors.lastname: Amigó-Borrás
authors.forename: José Félix
authors.initials: JF
authors.lastname: Mañes-Ferrer
mesh_terms: D002516:Ceramics; D003801:Dental Veneers; D008422:Materials Testing; D015040:Zirconium / Q000737:chemistry*
chemical_list: D015040:Zirconium; C028541:zirconium oxide