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

被引：7

作者：

Zhou, Jing ^{[1
,2
,3
]}

Hong, Huiyi ^{[1
,2
,3
]}

Zhou, Hong ^{[1
,2
,3
]}

Hua, Chengge ^{[1
,2
,3
]}

Yang, Zheng ^{[1
,2
,3
]}

Lai, Wenli ^{[1
,2
,3
]}

Long, Hu ^{[1
,2
,3
]}

机构：

[1] Sichuan Univ, State Key Lab Oral Dis, West China Hosp Stomatol, 14,Sect 3,Ren Min South Rd, Chengdu 610041, Peoples R China

[2] Sichuan Univ, Natl Clin Res Ctr Oral Dis, West China Hosp Stomatol, 14,Sect 3,Ren Min South Rd, Chengdu 610041, Peoples R China

[3] Sichuan Univ, Dept Orthodont, West China Hosp Stomatol, 14,Sect 3,Ren Min South Rd, Chengdu 610041, Peoples R China

来源：

QUINTESSENCE INTERNATIONAL | 2021年 / 52卷 / 06期

基金：

中国国家自然科学基金;

关键词：

impacted tooth; nerve injury; orthodontic extraction; ramus mini-screw; third molar; traction; INJURY; FEATURES; REMOVAL;

D O I：

10.3290/j.qi.b1244345

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

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.

引用

页码：538 / 546

页数：9

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