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- Title
Fabrication and properties of surface-modified β-Si<sub>3</sub>N<sub>4</sub> whiskers reinforced dental resin composites.
- Authors
Lu, Li ‐ Min; Zuo, Kai ‐ Hui; ZENg, Yu ‐ Ping
- Abstract
In this article, three kinds of surface-modified methods were used to treat β-Si3N4 whiskers before being incorporated into Bis-GMA/TEGDMA dental resin matrix in order to improve the whiskers' reinforcing effect. The experimental results showed that composites with directly heat-treated and then silanized β-Si3N4 whiskers had the best reinforcing effect. They had flexural strength of 160 ± 7.0 MPa (mean ± SD; n = 6), compressive strength of 371 ± 1.4 MPa (mean ± SD; n = 5) and HRA of 48.4 ± 0.5(mean ± SD; n = 5), respectively. In addition, water sorption and solubility test demonstrated that the composites were reliable to use as the dental restoration materials. Therefore, the directly heat-treated and then silanized β-Si3N4 whiskers (better than β-Si3N4 whiskers mixed with SiO2 nanoparticles or SiO2 sols) were most suitable fillers to reinforce dental resin composites. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
- Subjects
MICROFABRICATION; SURFACES (Technology); SILICON compounds; CRYSTAL whiskers; DENTAL resins; COMPOSITE materials; HEAT treatment; DENTAL fillings
- Publication
Journal of Applied Polymer Science, 2013, Vol 128, Issue 1, p41
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.38125