An alternative approach to extruding a vertically impacted lower third molar using an orthodontic miniscrew : a case report with cone-beam CT follow-up

Abstract

One of the most common oral surgical procedures is the extraction of the lower third molar(LTM). Postoperative complications such as paresthesia due to inferior alveolar nerve(IAN) injury are commonly observed in cases of horizontal and vertical impaction. The present report discusses a case of a vertically impacted LTM associated with a dentigerous cyst. An intimate contact between the LTM roots and the mandibular canal was observed on a panoramic radiograph and confirmed with cone-beam computed tomographic(CBCT) cross-sectional cuts. An orthodontic miniscrew was then used to extrude the LTM prior to its surgical removal in order to avoid the risk of inferior alveolar nerve injury. CBCT imaging follow-up confirmed the success of the LTM orthodontic extrusion.