Figure 2.

A) Initial periapical radiograph demonstrating severe internal calcification of root canal; B, C) Sagittal and axial planes, respectively, of initial CBCT, where presence of resorption and its exact three-dimensional location can be observed, with no associated root perforation; D) Photograph taken after access surgery, showing presence of granulation tissue in area of resorption; E) Intraoperative periapical radiograph, where slight deviation in distal direction was detected; F) Picture after placing gutta-percha radiopaque point, in deepest area of abrasion performed with ultrasound; G, H and I) Axial, sagittal and coronal planes, respectively, of intraoperative CBCT, in which radiopaque gutta-percha marker can be seen and correlated with center of root, where canal is located; J) Final radiograph, with three-dimensional obturation of root canal and internal resorption