Post-Traumatic Trigeminal Neuropathy Affecting an Accessory Canal of Canalis Sinuosus and Its Surgical Management: A Case Report.

AIM: To describe an unusual case of post-traumatic trigeminal neuropathy affecting an accessory canal of the canalis sinuosus related to a maxillary central incisor.

SUMMARY: This case report presents a 48-year-old female patient who suffered from neuropathic pain following the crown placement and endodontic treatment of a left maxillary central incisor (tooth 21). A cone beam computed tomographic (CBCT) scan of the anterior maxilla revealed an accessory canal apical to tooth 21, with extruded sealer within the bony channel. A sustained resolution of the patient's symptoms was achieved following apicectomy of the tooth and surgical resection of the accessory canal. The tooth remained asymptomatic at the 5-year follow-up.