Abstract
Extraction of impacted third molars often leads to severe complications caused by damage to the inferior alveolar nerve (IAN). To proposes a method for the partial grinding of an impacted mandibular third molar (IMM3) near the IAN to prevent IAN injury during IMM3 extraction. Between January 1996 and March 2022, 25 patients with IMM3 roots near the IAN were enrolled. The first stage of the operation consisted of grinding a major part of the IMM3 crown with a high-speed turbine dental drill to achieve sufficient space between the mandibular second molar and IMM3. After 6 months, when the root tips were observed to be away from the IAN on X-ray examination, the remaining part of the IMM3 was completely removed. All IMM3s were extracted easily without symptoms of IAN injury after extraction. Partial IMM3 grinding may be a good alternative treatment option to avoid IAN injury in high-risk cases.
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