R-curve behavior of a short-fiber reinforced resin composite after water storage
Janine Tiu1, Renan Belli1, Ulrich Lohbauer1
1Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Zahnklinik 1 - Zahnerhaltung und Paradontlogie, Forschungslabor für dentale Biomaterialien, Glueckstrasse 11, Erlangen 91054, Germany.
Abstract:
As a supplement to our investigation into R-curves in a short-fiber reinforced dental resin composite, we investigate the effects of 2-months water storage. Water is known to degrade the siloxane bonds linking matrix and fillers, which has been suggested to decrease the fracture toughness in conventional resin composites. However, fiber-reinforced systems seem to be less affected as the toughness is dependent on fiber bridging, which is only effective if a weaker interfacial bond between fiber and matrix is present.
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