Physical and mechanical characterization of a bilayered zirconia system: influence of hydrothermal aging

• Grant number: 22/07733-2
• Support Opportunities: Scholarships in Brazil - Master
• Start date: July 01, 2022
• End date: December 31, 2024
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Estevam Augusto Bonfante
• Grantee: Edisa de Oliveira Sousa
• Host Institution: Faculdade de Odontologia de Bauru (FOB). Universidade de São Paulo (USP). Bauru , SP, Brazil
• Associated research grant: 21/06730-7 - Towards sustainable zirconia recycled from milling waste and boosted by glass infiltration for restorative use, and of the development of strong, graded, and aging resistant multilayered zirconia blocks, AP.JP2
• Associated scholarship(s): 23/02142-9 - Nanomechanical characterization of an experimental bilayered zirconia system, BE.EP.MS

Abstract

A strategy to further improve the mechanical properties of ultra-translucent zirconia systems (Y-PSZ) has been recently proposed through the development of layered systems. However, multilayered zirconia systems have shown a significant reduction in the strength relative to the isolated counterparts, which was associated with the presence of defects at the interface. Hence, the objective of the present study will be the study of different zirconia powders and processing routes for bilayered zirconia systems, and to investigate their optical and mechanical performance when subjected to hydrothermal aging. Commercial zirconia powders (3Y-TZP, 4Y-PSZ, and 5Y-PSZ) will be acquired. Bilayered zirconia discs will be processed via successive uniaxial pressing, where the first layer will consist of a 3Y-TZP or a 4Y-PSZ powder and the second layers of a 5Y-PSZ. After sintering and polishing, half of the specimens will be aged and characterized by scanning electron microscopy (SEM) and x-ray diffraction (XRD) to investigate microstructure and crystalline content, respectively. The density will be determined using Archimedes principle. Optical properties will be evaluated in a spectrophotometer using reflectance tests. The hardness will be calculated using Vickers indentation test. The biaxial flexural strength test will be conducted to determine the probability of survival, Weibull modulus and characteristic strength. (AU)

Scientific publications

(6)

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

SOUSA, EDISA O.; CAMPOS, TIAGO M. B.; BERGAMO, EDMARA T. P.; ALVES, LARISSA M. M.; BENALCAZAR-JALKH, ERNESTO B.; MARUN, MANOELA M.; GALLI, MATEUS Z.; CARVALHO, LAURA F.; THIM, GILMAR PATROCINIO; TEBCHERANI, SERGIO M.; et al. Nanomechanical and microstructural properties of experimental bilayered zirconia ceramics after hydrothermal aging. CERAMICS INTERNATIONAL, v. 50, n. 19, p. 10-pg., 2024-08-09. (21/07440-2, 20/12874-9, 22/05496-3, 21/06730-7, 23/07289-8, 22/07733-2, 22/05495-7, 22/07157-1, 23/02142-9)

MARUN, MANOELA M.; CAMPOS, TIAGO M. B.; ALVES, LARISSA M. M.; SOUSA, EDISA O.; GALLI, MATEUS Z.; BENALCAZAR-JALKH, ERNESTO B.; CARVALHO, LAURA F.; MONTEIRO-SOUSA, RAPHAELLE S.; BERGAMO, EDMARA T. P.; TEBCHERANI, SERGIO M.; et al. Effect of hydrothermal aging on the physical, optical and mechanical properties of an experimental 3Y/4Y zirconia bilayer system. NEXT MATERIALS, v. 8, p. 11-pg., 2025-07-01. (22/05495-7, 22/07733-2, 19/08693-1, 21/08018-2, 18/03072-6, 23/07289-8, 22/05496-3, 22/07157-1, 23/02142-9, 20/12874-9, 19/00452-5, 21/06730-7, 21/07440-2)

GALLI, M. Z.; CAMPOS, T. M. B.; BENALCAZAR-JALKH, E. B.; ALVES, L. M. M.; MARUN, M. M.; SOUSA, E. O.; YAMAGUCHI, S.; THIM, G. P.; GIERTHMUEHLEN, P. C.; MONTEIRO-SOUSA, R. S.; et al. Processing and characterization of an experimental bilayer first-generation 3Y-TZP and super-translucent 4Y-PSZ zirconia subjected to hydrothermal aging. MATERIALS TODAY COMMUNICATIONS, v. 46, p. 12-pg., 2025-06-01. (23/08712-1, 21/06730-7, 23/07289-8, 20/12874-9, 22/07733-2, 22/05495-7, 21/07440-2, 22/05496-3, 22/07157-1)

CARVALHO, LAURA F.; BERGAMO, EDMARA T. P.; CAMPOS, TIAGO M. B.; FERMINO, ELISA S.; ALVES, LARISSA M. M.; BENALCAZAR-JALKH, ERNESTO B.; SOUSA, EDISA O.; COELHO, PAULO G.; WITEK, LUKASZ; TEBCHERANI, SERGIO M.; et al. Characterization of a hydrothermally aged experimental alumina-toughened zirconia composite. Dental Materials, v. 40, n. 9, p. 13-pg., 2024-08-14. (21/07440-2, 12/19078-7, 22/07157-1, 16/18818-8, 22/13426-5, 20/12874-9, 21/08018-2, 22/07733-2, 21/06730-7, 23/07289-8, 19/08693-1)

BENALCAZAR-JALKH, ERNESTO B.; CAMPOS, TIAGO M. B.; DOS SANTOS, CLAUDINEI; ALVES, LARISSA M. M.; CARVALHO, LAURA F.; BERGAMO, EDMARA T. P.; TEBCHERANI, SERGIO M.; WITEK, LUKASZ; COELHO, PAULO G.; THIM, GILMAR P.; et al. Novel bilayered zirconia systems using recycled 3Y-TZP for dental applications. Dental Materials, v. 41, n. 4, p. 12-pg., 2025-02-28. (21/07440-2, 22/05495-7, 21/06730-7, 22/07733-2, 23/07289-8, 22/07157-1, 19/08693-1, 20/12874-9, 22/05496-3)

SOUSA, EDISA O.; ALVES, LARISSA M. M.; CAMPOS, TIAGO M. B.; BERGAMO, EDMARA T. P.; BENALCAZAR-JALKH, ERNESTO B.; MARUN, MANOELA M.; GALLI, MATEUS Z.; CARVALHO, LAURA F.; DOS SANTOS, CLAUDINEI; TEBCHERANI, SERGIO M.; et al. Experimental bilayer zirconia systems after aging: Mechanical, optical, and microstructural characterization. Dental Materials, v. 41, n. 4, p. 11-pg., 2025-02-28. (22/05496-3, 23/02142-9, 23/07289-8, 21/06730-7, 22/07157-1, 22/05495-7, 22/07733-2, 20/12874-9, 21/07440-2)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SOUSA, Edisa de Oliveira. Experimental bilayer zirconia systems after aging: mechanical, optical, and microstructural characterization. 2024. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Odontologia de Bauru (FOB/SDB) Bauru.