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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

June 2021
Volume 52 , Issue 6

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Orthodontic extraction of a high-risk impacted mandibular third molar contacting the inferior alveolar nerve, with the aid of a ramus mini-screw

Jing Zhou/Huiyi Hong/Hong Zhou/Chengge Hua, PhD/Zheng Yang, PhD/Wenli Lai, PhD/Hu Long, PhD

Pages: 538546
DOI: 10.3290/j.qi.b1244345

An orthodontic extraction technique with a ramus mini-screw was used to remove a deeply impacted mandibular third molar contacting the inferior alveolar nerve, avoiding damage to the inferior alveolar nerve and relieving postsurgery inflammation. Case presentation: A 24-year-old man was required to extract impacted third molars for orthodontic treatment. Panoramic radiographs and CBCT images showed that his mandibular left third molar penetrated into the inferior alveolar nerve canal and a distomolar was inverted and impacted distally to the third molar. The distomolar was directly removed and the impacted third molar was extruded with the aid of a ramus mini-screw. After 4 months of traction, the mandibular left third molar was successfully moved away from the inferior alveolar nerve canal. No nerve injury occurred after the surgical extraction and the patient was very satisfied with the treatment outcome. Conclusion: Orthodontic extraction, with the aid of ramus mini-screws, is a safe, effective, and efficient technique for the removal of high-risk impacted molars contacting the inferior alveolar nerve.

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