Endodontic treatment of the maxillary first molar with palatal canal variations: A case report and review of literature

Figure 1 Treatment process under the endodontic microscope and X-ray. A: A preoperative digital panoramic radiograph of the maxillary right region. Carious lesions are identified in the maxillary first and second molars; B: Intraoral photograph reveals five root canal orifices (white arrow) in the maxillary first molar, such as mesiobuccal (MB), second mesiobuccal (MB2), distobuccal (DB), mesiopalatal, and distopalatal (DP) canals; C: The X-ray confirms the working length of the MB, DB, and DP canals; D: The MB, MB2, DB, and DP canals are obturated with injectable thermoplasticized gutta-percha; E and F: The postoperative X-ray and cone-beam computed tomography image confirms that the MB, MB2, DB, and DP canals are tightly obturated.