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Surface defects. (a) A 2D image of an indentation with a test of Vickers hardness; (b) a scanning electron microscope (SEM) image of an indentation; (c) a 3D reconstruction of an indentation; (d) a 2D image of a detachment defect in an artificial tooth; (e) an SEM image of an artificial tooth; (f) a 3D reconstruction of an artificial tooth.
