Endodontic management of the maxillary first molars with two root canals: A case report and review of the literature

Figure 1 Treatment process using a dental operating microscope and X-ray images (Case 1). A: Preoperative periapical radiograph of teeth indicates the existence of decay in the distal part of the tooth; B-C: Only one buccal canal orifice and palatal canal orifice can be detected under the visual field of the dental operating microscope; D: Radiograph of master cone; E: Post-obturation periapical radiograph; F: Two root canals are obturated by gutta-percha.