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Journal of Nanomaterials
Volume 2008 (2008), Article ID 840254, 6 pages
http://dx.doi.org/10.1155/2008/840254
Research Article

Performance Enhancement of Dental Composites Using Electrospun Nanofibers

1Shenkar College of Engineering and Design, 12 Anna Frank Street, Ramat Gan 52526, Israel
2BJM Laboratories Ltd, 12 Hassadna Street, Industrial Park, Or-Yehuda 60200, Israel
3Premier Dental Products Company, 1710 Romano Drive, Plymouth Meeting, PA 19462, USA
4Department of Biomedical Engineering, New Jersey Institute of Technology, 111 Lock Street, Newark, NJ 07103, USA
5Department of Materials Science Engineering, New Jersey Institute of Technology, 111 Lock Street, Newark, NJ 07103, USA

Received 22 November 2007; Revised 28 April 2008; Accepted 17 June 2008

Academic Editor: Adam Gadomski

Copyright © 2008 H. Dodiuk-Kenig et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The objective of the present study is to investigate the effect of electrospun nanofiber reinforcement on the properties of commercially available, hyperbranched polymer modified (Hybrane, 0.3 wt.% DSM) dental formulations. The emergence of functionalized nanoscale reinforcements having large surface area (hundreds of square meters/gram) has enabled the design of novel nanocomposites with new and complex structures leading to enhanced mechanical and physical properties. Electrospun nanofibers from a range of polymer chemistries (PVOH, PLLA, Nylon 6) have been investigated as a reinforcing phase at levels between 0.01 and 0.3 wt.%, with and without a silane coupling agent surface treatment. The experimental results indicate that 0.05 wt.% reinforcement with 250 nm diameter PVOH nanofibers leads to a 30% improvement in compressive strength, coupled with a shrinkage reduction of about 50%. Electrospun fiber reinforcement by other chemistries or at other diameters showed either no property improvement or led to property loss.