Coronectomy of mandibular third molars with computer-assisted navigated system: A case report

Abstract

The present case report describes a successful surgical case of coronectomy of a fully impacted lower third molar in close relationship with the Inferior Alveolar Nerve (IAN) that was trapped in the furcation roots of the lower third molar. It was associated with a dentigerous cyst. Dynamic Navigation (DN) was used to minimize iatrogenic injuries to the IAN. Coronectomy and cyst removal were successfully performed. High surgical accuracy was provided thanks to the dynamic navigation system that allows the surgeon to perform the procedures without direct vision during the surgery. No neurological damage or other intraoperative complications occurred. One month later, the patient reported a dental abscess to the left mandibular second molar without wound dehiscence which required antibiotic and endodontic therapy. After 2 years, no long-term postoperative complications were reported and follow-up radiographs showed complete bone mineralization. In conclusion, technological support of DN in Coronectomy seems to avoid IAN injury and reduce postoperative complications.