Non-surgical management of dens invaginatus type IIIB in maxillary lateral incisor with three root canals and 6-year follow-up: A case report and review of literature

Figure 1 Radiographic diagnosis and interpretation. A: Periapical radiograph of tooth #7 displays dens invaginatus Oehler’s type IIIB, along with wider dimension mesiodistally, complex internal anatomy, and periapical radiolucency; B: Panoramic radiograph displays that tooth #10 and other teeth have normal root canal configuration.

Figure 2 Initial access and exploration radiographically and final access cavity clinically. A: Periapical radiograph of tooth #7 displaying the initial access into the two regular root canals on the palatal side: mesio-palatal (MP) and disto-palatal (DP); B: Magnified view under dental operating microscope depicting the regular palatal canals (MP and DP) joined by a C-shaped groove along the palatal surface and the invaginated buccal canal near the buccal surface.

Figure 3 Radiography displaying working length determination and obturation at two different times. A: Periapical radiograph of tooth #7 to confirm the working length; B: Periapical radiograph of tooth #7 immediately after obturation; C: Periapical radiograph of tooth #7 at 6-year follow-up, displaying significant periapical healing.