Adhesion between zirconia and resin cement: A critical evaluation of testing methodologies
| Autor: | Mutlu Özcan, Manassés Tercio Vieira Grangeiro, Renata Marques de Melo, Luiz Felipe Valandro, Guilherme da Rocha Scalzer Lopes, Nathália de Carvalho Ramos, M.A. Bottino, Jefferson David Melo de Matos |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Sao Francisco University (USF), University of Zurich, Universidade Federal de Sergipe (UFS) |
| Rok vydání: | 2021 |
| Předmět: |
Dental Stress Analysis
Ceramics Materials science Surface Properties Fracture strength Biomedical Engineering Y-TZP 02 engineering and technology Biomaterials 03 medical and health sciences 0302 clinical medicine Flexural strength Ultimate tensile strength Materials Testing Shear stress Fracture mechanics Aluminum Oxide Cubic zirconia Ceramic Composite material Bond strength Tensile bond strength Shear bond strength Dental Bonding 030206 dentistry 021001 nanoscience & nanotechnology Resin Cements Mechanics of Materials visual_art visual_art.visual_art_medium Adhesion Zirconia Mechanical test Adhesive Zirconium 0210 nano-technology Shear Strength |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1878-0180 |
| Popis: | Made available in DSpace on 2021-06-25T10:29:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-08-01 This study aimed to analyze different methodologies (tensile, microtensile, shear, microshear, and interfacial toughness) for evaluation of the bond strength between zirconia (Y-TZP) and resin cement. Zirconia ceramic blocks (VITA in-Ceram® YZ, VITA Zahnfabrik, Germany) were obtained, substrate surfaces were air-abraded with aluminum oxide (50 μm) for 10 s (2 bar pressure, distance: 10 mm, angle: 90°). Then, the specimens were washed with distilled water, dried, and coated with Clearfil Ceramic Primer that was actively applied with a microbrush for 20 s. The specimens were then cemented with resin cement under a load of 750 g, followed by photo-polymerization (40 s on each surface). After cementation, the specimens were aged in thermocycling (8000 cycles, 5–55 °C, 30 s for each bath) and subjected to tensile, microtensile, shear, microshear or interfacial toughness tests. All specimens were inspected for failure modes. The microtensile test showed the highest bond value (18.29 N/mm2). The microshear tests showed the highest coefficient of variation (0.59) and highest number of pre-test failures. The interfacial energy to fracture test showed that as the shear stress increased its interaction in the adhesive interface, the coefficient of variation also increased. The bond strength of Y-TZP showed different results according to the methodology, as well as its interfacial energy to fracture varied according to the angulation/type of stress specimen was submitted. The lower the shear stress at the adhesive interface of the mixed tests (interfacial energy to fracture), the lower was the variability of the test. Department of Dental Materials and Prosthodontics São Paulo State University (UNESP) Institute of Science and Technology, 777 Eng. Francisco José Longo Avenue College of Dentistry Sao Francisco University (USF), 218 Sao Francisco de Assis Avenue Division of Dental Biomaterials Center for Dental Medicine University of Zurich, Plattenstrasse 11 College of Dentistry Federal University of Santa Maria (UFSM), 1000 Roraima Avenue Department of Dental Materials and Prosthodontics São Paulo State University (UNESP) Institute of Science and Technology, 777 Eng. Francisco José Longo Avenue |
| Databáze: | OpenAIRE |
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