Nano Science and Technology Institute
Nanotech 2007 Vol. 2
Nanotech 2007 Vol. 2
Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 2
Chapter 8: Bio Materials and Tissues

Nanocomposites for Restorative Dentistry

Authors:A. Uveges, K. Bukovinszki, M. Szaloki, C. Hegedus and J. Borbely
Affilation:University of Debrecen, HU
Pages:717 - 720
Keywords:nanocomposite, dental resin, shrinkage, tensile fracture
Abstract:Dental filling materials are crosslinked resins with high abrasion resistance. Inorganic micro and recently nanofillers are introduced to improve their properties. However, the shrinkage of the resin component during the polymerization reaction is still a critical limitation of dental composite resins. Stresses from shrinkage can cause clinical problems such as postoperative pain, fracture of the tooth, and opening of restoration margins that can result in microleakages and recurrent carries. Many factors have a direct effect on the polymerization shrinkage of composite resin: curing methods (chemical or light-curing), placement techniques (incremental or bulk), cavity configuration and size of the restoration. The aim of this study was to examine the influence of modified resin using reactive polymeric nanoparticles on the physical properties of filling materials such as flexural modulus, flexural stress and polymerization shrinkage of different composites.
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