Two-stage extraction by partial grinding of impacted mandibular third molar in close proximity to the inferior alveolar nerve

Figure 1 Panoramic views showing changes in relationship between the inferior alveolar nerve and impacted mandibular third molar root position by partial grinding in two cases (arrow indicates the mandibular canal). A: Preoperative panoramic radiograph of Case 1 depicting direct contact between the inferior alveolar nerve (IAN) and the impacted mandibular third molar (IMM3); B: Post-partial grinding panoramic radiograph of Case 1, demonstrating sufficient eruption space between the impacted tooth and adjacent teeth; C: Six-month post-partial grinding view illustrating space between the root of the IMM3 and the superior wall of the IAN canal in Case 1; D: Preoperative panoramic radiograph of Case 2 revealing the IMM3 passing through the IAN; E: Post-partial removal of IMM3 (Phase 1) panoramic radiograph of Case 2, displaying adequate eruption space between the impacted tooth and adjacent teeth; F: Panoramic view after 6 mo of partial grinding indicating that in Case 2, the root of the IMM3 had moved away from the IAN canal following 6 months of partial grinding.