The effect of silica nanoparticles on the mechanical properties of fiber-reinforced composite resins
| Autor: | Faeze Hamze, Mohammad Bagher Rezvani, Reihane Hajrezai, Mohammad Atai |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Silicon dioxide Scanning electron microscope Nanoparticle Modulus 02 engineering and technology Fiber-reinforced composite Bending 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Flexural strength Composite material General Dentistry silicon dioxide 030206 dentistry 021001 nanoscience & nanotechnology Microstructure lcsh:RK1-715 chemistry flexural strength lcsh:Dentistry Original Article Fiber-reinforced composite resins nanoparticles 0210 nano-technology |
| Zdroj: | Journal of Dental Research, Dental Clinics, Dental Prospects Journal of Dental Research, Dental Clinics, Dental Prospects, Vol 10, Iss 2, Pp 112-117 (2016) |
| ISSN: | 2008-210X |
| Popis: | Background. Nanotechnology has introduced many nanoparticles in recent years, which can be incorporated for mechanical improvement of dental materials. However, the existing data are widely sparse. This study investigated the reinforcing effect of silica nanoparticles when incorporated into the matrix phase of an experimental dental fiber-reinforced compositeresin (FRC) through evaluation of its flexural properties. Methods. In this experimental study FRC samples were divided into two main groups (containing two or three bundles),either of whic consisted of five subgroups with 0, 0.2, 0.5, 2 and 5 wt% of silica nanoparticles in the matrix resin (n=10 in each subgroup); a commercial FRC (Angelus, Brazil) was used as the control group (n=10). Three-point bending test was performed to evaluate the flexural strength and modulus. Thereafter, the microstructure of the fractured samples was evalu-ated using scanning electron microscopy (SEM). The results were analyzed with one-way ANOVA and HSD Tukey tests (α = 0.05). Results. The results revealed that the silica nanoparticles had a significant and positive effect on the flexural strength and modulus of FRCs (P 0.05) in either group with two or three bundles of fibers. Conclusion. Incorporating silica nanoparticles into the FRC resin phase resulted in improved flexural strength and mod-ulus of the final product. |
| Databáze: | OpenAIRE |
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