Fig. 9
From: Endodontic access cavity preparation: challenges and recent advancements
a) Periapical radiograph of the 21 with evidence of apical pathology and an invisible canal. b) Sagittal CBCT slide showing evidence of a patent canal with associated apical pathology around the 21. c) Postoperative periapical radiograph following root canal treatment of the 21. Note the voids in the access cavity restored with resin composite, owing to the very conservative nature of the access cavity. d) 3D-printed stent seating fully on model. Note the viewing windows designed to check for full seating of the guide. e) Full seating of the stent, verified through the viewing windows added. f) Access cavity created by the Steco titanium drill
