Flexural strength, shear bond strength, and thermal shock behanvior of Y-TZP ceramics, including the effects of aging

PLEASE NOTE: This work is protected by copyright. Downloading is restricted to the BU community: please click Download and log in with a valid BU account to access. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.Thesis (DScD) --Boston University, Henry M. Goldman School of Dental Medicine, 2012 (Department of Restorative Sciences and Biomaterials).Includes bibliographic references: leaves 251-261.Objectives: To evaluate the effect of thermocycling and aging on biaxial flexural and shear bond strengths of veneering porcelain to Y-TZP ceramics with various surface treatments and to evaluate the thermal shock behavior of veneered Y-TZP ceramics. Materials: Vita YZ zirconia and four conventional veneering porcelains were used: VITAVM[R] 9, Nobel Rondo[TM] Zirconia, Noritake CZR and Lava Ceram[TM]. Methods: I. Biaxial flexural test: a. Performed for Vita YZ zirconia at baseline and after thermocycling. b. Performed for Vita YZ zirconia at baseline and then at each succeeding year for three years. c. Performed for porcelain discs at baseline and then each succeeding year for three years. II. Shear bond strength test: a. Performed for Vita YZ zirconia at baseline and after thermocycling. b. Performed for Vita YZ zirconia at baseline and then at each succeeding year for three years. III. Thermal shock test: Performed for veneered zirconia treated with different surface treatments. [TRUNCATED