Three-dimensional inlay-guided endodontics applied in variant root canals: A case report and review of literature

Figure 1 The maxillary left second molar before retreatment and preliminary preparations with the conventional method. A: Radiographic image of the tooth before retreatment; B: Retreatment of the mesial and palatal roots of the tooth has smoothly reached the working length; C: Even after 2.5 h, the distal root has not been found under a microscope; D: Treatment using conventional methods resulted in a small perforation in the pulpal floor.