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Fatigue life response of human coronal dentin. (a) The role of tubule orientation on the fatigue life response of young coronal dentin (reprinted from Ref. [140] with permission from the publisher), (b) comparison of fatigue life diagram for bur treated dentin beams and control beams (reprinted from Ref. [26] with permission from the publisher) . Arrows indicate those beams that did not fail.
