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Journal of Dental Research, Vol 56, 748-753, Copyright © 1977 by International & American Associations for Dental Research Online Journals

ARTICLES

Fracture toughness of composite and unfilled restorative resins

J. C. Roberts, J. M. Powers and R. G. Craig

Fracture toughness, critical strain energy release rate, and critical stress intensity factor were determined for experimental and commercial restorative resins. A composite resin had lower resistance to crack initiation than an unfilled acrylic resin. The data were consistent with surface failure observed in single-pass wear studies of these resins.




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