Coronectomy of Impacted Lower Third Molar in Close Proximity to Inferior Alveolar Nerve: Evaluation of Outcomes and Complications After One-Year Follow-Up

Objectives: This current study was performed to evaluate the outcome after coronectomy of mandibular third molars in terms of complications met during or after the procedure, IAN injury, root migration and need for re operation. Methodology: This present clinical study was conducted in Oral and Maxillofacial Surgery Department of private dental hospital of Islamabad for 02 years from June 2022 to June 2024. Forty-five mandibular third molars of patients having high risk of IAN injury between the age group of 18 to 45 years, were involved in the study. Preoperatively the lower third molars were assessed clinically and radio graphically. Coronectomy was done and primary closure was achieved. Patients were evaluated postoperatively at 01 week, 06 months and 01 year. Post-operative pain, IAN and lingual nerve injury or any other complications were observed and recorded. Results: Not a single patient had IAN and lingual nerve injury. Although 03 patients had infection at the coronectomy site after few months and required another surgical removal. However, 3 of our patients were categorized as failed coronectomy due to intra operative mobilization of roots, which were were removed. Conclusion: The procedure of Coronectomy is effective in avoiding inferior alveolar nerve injury following removal of lower third molars in high risk cases with very low prevalence of complications.