We present the case of a 20-year-old female patient who came to the Faculty of Dentistry in Seville referred by her orthodontist. Given the inadequate position of the lower left canine (included in horizontal position), the temporary canine was used by the orthodontist during orthodontic treatment as a permanent tooth, not considering it appropriate to rescue the permanent tooth. He informed the patient of the existence of the dental inclusion and the need for its extraction or at least its monitoring.
In the radiological examination (orthopantomography) we found the inclusion of the lower left canine in a horizontal position under the apices of the contralateral lower premolars and canines (Mupparapu transmigration pattern 4 (8)). Given the evidence of transmigration of the canine, we indicated its extraction. If we were to continue to monitor the case, bringing the impacted tooth closer to the mentonian foramen would unnecessarily increase the risks of the intervention, and would almost certainly result in clinical symptoms due to irritation of the lower dental nerve by the impacted tooth (9, 10).

The extraction was performed through a partial Neuman incision, with extraction at the level of the left lateral incisor. Discharge was not performed in the fourth quadrant due to the proximity of the mentonian foramen, identifying and protecting the right mentonian nerve during the operation. The tooth was extracted by coronal osteotomy and double odontosection, also eliminating the pericoronal sac.

Finally, the wound was sutured and analgesic, anti-inflammatory (Ibuprofen 600 mg, 1 tablet / 8 hours for one week) and antibiotic (Amoxicillin 875 mg / Clavulanic acid 125 mg, 1 tablet / 8 hours for one week) treatment was prescribed during the postoperative period, which passed without incident. The stitches were removed after ten days. The evolution was favourable and no complications were detected.

