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Orthodontic Extrusion of Mandibular Third Molar With a Miniscrew and Cross-Arch Elastic

Authors
 Seoyeon Jung  ;  Jae-Ho Lee  ;  Jisun Huh  ;  Wonse Park 
Citation
 JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY, Vol.79(7) : 14222.e1-1422.e8, 2021-07 
Journal Title
JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY
ISSN
 0278-2391 
Issue Date
2021-07
MeSH
Adult ; Female ; Humans ; Mandible / surgery ; Mandibular Nerve ; Molar, Third / surgery ; Orthodontic Extrusion ; Tooth Extraction / adverse effects ; Tooth, Impacted* / surgery ; Trigeminal Nerve Injuries*
Abstract
Sensory dysfunction is the most serious complication that occurs after extracting lower third molars in close proximity to the inferior alveolar nerve (IAN). Even experienced surgeons have difficulties in avoiding nerve damage when the root is anatomically adjacent to the nerve canal. A useful method for reducing nerve damage during extraction is to perform orthodontic extrusion, in which the distance between the nerve and the root increased after applying an orthodontic force on the third molar while extruding the tooth. Here, we report the case of a 37-year-old female who presented with a partially erupted left lower third molar and risk of IAN nerve damage because of close anatomical proximity between the nerve and root. She underwent extraction using a miniscrew placed in the maxilla and a routine orthodontic mechanism using a cross-arch elastic band that induced a 3-mm vertical eruption in the impacted third molar without using complex orthodontic devices. In addition, tilting the dental axis to the lingual side resolved the proximity between the IAN and the tooth, thereby allowing extraction to proceed without major complications.
Full Text
https://www.sciencedirect.com/science/article/pii/S027823912100104X
DOI
10.1016/j.joms.2021.01.036
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 1. Journal Papers
Yonsei Authors
Park, Wonse(박원서) ORCID logo https://orcid.org/0000-0002-2081-1156
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/188244
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