Translucency, flexural strength, fracture toughness, fracture load of 3-unit FDPs, Martens hardness parameter and grain size of 3Y-TZP materials
| Autor: | Nina Lümkemann, Beatrice Sener, Bogna Stawarczyk, Eva Jerman, Regina Pfefferle |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Scanning electron microscope Surface Properties Modulus 02 engineering and technology 03 medical and health sciences Dental Materials 0302 clinical medicine Fracture toughness Flexural strength Hardness Indentation Flexural Strength Materials Testing Mustelidae Animals General Materials Science Cubic zirconia Composite material General Dentistry Universal testing machine 030206 dentistry 021001 nanoscience & nanotechnology Grain size Mechanics of Materials Zirconium 0210 nano-technology |
| Zdroj: | Dental materials : official publication of the Academy of Dental Materials. 36(7) |
| ISSN: | 1879-0097 |
| Popis: | Objective This investigation tested pre-shaded 3Y-TZP materials on optical, mechanical and structural properties and calculated correlations between these properties. Methods Seven A2-shaded 3Y-TZP zirconia materials were investigated on translucency (T) via UV–vis-spectrophotometer, fracture load of 3-unit FDPs (FL), biaxial flexural strength (FS), Chevron-Notch Beam (CNB), fracture toughness (KIC) and Martens parameter (hardness: HM and indentation modulus: EIT). FL, FS and KIC were measured in a universal testing machine. The grain size was evaluated by scanning electron microscopy (SEM). Data was analyzed using one-way ANOVA followed by post hoc Scheffe, Kruskal–Wallis-, Mann–Whitney-U- and Pearson-test (p Results For translucency, negative correlations were found with results of facture load (R = −0.444, p Significance Despite of being based on the same raw material, tested zirconia materials significantly differed regarding optical, mechanical (except biaxial flexural strength and Martens hardness) and structural properties. Materials with highest optical properties were those with lowest mechanical properties (CER, COP). |
| Databáze: | OpenAIRE |
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