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Nano Dicalcium Phosphate Anhydrous-Whisker Composites With High Strength and Ca and PO4 Release



Hockin D. Xu, Limin Sun, Michael Weir, Joseph M. Antonucci, Shozo Takagi, Laurence C. Chow, Max A. Peltz


The main challenges facing composite restorations are secondary caries and bulk fracture. The objective of this study was to investigate the Ca and PO4 release and strength of whisker-reinforced composites containing nano-sized dicalcium phosphate anhydrous (DCPA, CaHPO4) particles. A spray-drying process was used to synthesize the nano DCPA particles. Flexural strength (mean ? sd; n = 5) for the composite containing 2-hydroxyethyl methacrylate (HEMA) at DCPA:whisker mass ratio = 1:2 was (156 ? 11) MPa. It was similar to (148 ? 9) MPa for the composite without HEMA, and (167 ? 23) MPa for the heat-cured composite (p > 0.1). They were higher than (103 ? 32) MPa of an inlay/onlay control and (118 ? 22) MPa of a hybrid control (p
Journal of Dental Research


Ca and PO4 release, dental resin composite, nano particles, strength, whiskers


Xu, H. , Sun, L. , Weir, M. , Antonucci, J. , Takagi, S. , Chow, L. and Peltz, M. (2006), Nano Dicalcium Phosphate Anhydrous-Whisker Composites With High Strength and Ca and PO<sub>4</sub> Release, Journal of Dental Research, [online], (Accessed July 13, 2024)


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Created August 1, 2006, Updated February 17, 2017