1. On the mechanical properties of monolithic and laminated nano-ceramic resin structures obtained by laser printing
- Author
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Júlio C.M. Souza, P. Pinto, Bruno Henriques, M.C. Fredel, Filipe Samuel Silva, Óscar Carvalho, and Douglas Fabris
- Subjects
Universal testing machine ,Materials science ,Laser printing ,Mechanical Engineering ,030206 dentistry ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Microstructure ,Laser ,Industrial and Manufacturing Engineering ,Shear bond ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Flexural strength ,Mechanics of Materials ,law ,visual_art ,Nano ,Ceramics and Composites ,visual_art.visual_art_medium ,Ceramic ,Composite material ,0210 nano-technology - Abstract
The purpose of this study was to evaluate the mechanical properties of laser printed monolithic and laminated nano ceramic resins (NCR) for dental prosthetic applications. Three different types of discs were produced by laser printing: monolithic NCR discs and laminated NCR discs with 100 μm (laminate_100) and 500 μm (laminate_500) resin interlayers (n = 10). To assess the adhesion strength of the photosensitive resin used as interlayer to the NCR, cylindrical specimens were produced. The biaxial flexural strength and shear bond strength of the specimens were measured using a universal testing machine. Data was statistically analyzed by one-way ANOVA followed by Tukey HSD test (α = 0.05). The microstructure and fracture surfaces were analyzed by SEM/EDS. Results were rationalized with finite element analysis (FEA). Laminate_100 specimens showed significantly higher flexural strength (∼50%) than monolithic and Laminate_500 specimens (p
- Published
- 2018