Fig. 1From: Accuracy of cone-beam computed tomography for the evaluation of mandible invasion by oral squamous cell carcinomaa Three gutta-percha points were placed in the samples. b Gutta-percha points appeared as highlights in a cone-beam computed tomography image. c Simultaneous surface exposure of three gutta-percha points. d A section including three gutta-percha points was stained with hematoxylin–eosin; subsequent dissolution of the points yielded three round holesBack to article page