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Three‐dimensional tomography of composite fracture surfaces
Author(s) -
Drummond James L.,
De Carlo Francesco,
Super Boaz J.
Publication year - 2005
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30298
Subject(s) - materials science , composite number , distilled water , composite material , dental composite , tomography , fracture (geology) , volume (thermodynamics) , optics , chemistry , physics , chromatography , quantum mechanics
Abstract The goal of this project was to image the three‐dimensional fracture interface of a dental composite with the use of X‐ray tomography. With the use of the Advanced Photon Source (APS) at Argonne National Laboratory, three‐dimensional images were obtained of the crack interface of a dental composite material that had been subjected to three different treatments: a control, cycled in air, and cycled in a 50/50 mixture by volume of ethanol and distilled water. The cycle‐loaded treatments were for 100,000 cycles at a load between 80 and 100 N at 5 Hz. The crack interface extended over 28 slices for the control, 96 for the air‐cycled specimen, and 83 slices for the 50/50 solution cycle specimen. It would appear that the fatiguing of the specimens allowed for an increase in the crack interface as demonstrated by the 3D tomographical analysis. This volume increase in the crack interface is attributed to a separation of the filler fiber from the resin matrix. Three‐dimensional tomography provides an excellent method to observe crack interfaces of dental composites subjected to different types of mechanical and environmental conditions. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2005