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Lingual nerve impairment/injury after retrieval of the displaced mandibular third molar into the floor of the mouth

  • Joe Iwanaga
    Correspondence
    Corresponding author at: Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, 131 S. Robertson St. Suite 1300, New Orleans, LA 70112, USA
    Affiliations
    Department of Oral and Maxillofacial Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan

    Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA

    Department of Neurology, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA

    Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Fukuoka, Japan

    Division of Gross and Clinical Anatomy, Department of Anatomy, Kurume University School of Medicine, Kurume, Fukuoka, Japan
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  • Tomotaka Kato
    Affiliations
    Division of General Dentistry, Nippon Dental University Hospital, Tokyo, Japan
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  • Kisho Ono
    Affiliations
    Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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  • R. Shane Tubbs
    Affiliations
    Department of Oral and Maxillofacial Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan

    Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA

    Department of Anatomical Sciences, St. George’s University, St. George’s, Grenada, West Indies

    Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, LA,USA

    Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System, New Orleans, LA, USA

    Department of Surgery, Tulane University School of Medicine, New Orleans, LA,USA

    University of Queensland, Brisbane, Australia
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  • Soichiro Ibaragi
    Affiliations
    Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Published:January 24, 2023DOI:https://doi.org/10.1016/j.bjoms.2023.01.002

      Abstract

      Retrieval of the displaced mandibular third molar in the floor of the mouth is challenging as the lingual nerve is always at a risk of injury. However, there is no available data that shows the incidence of the injury caused by the retrieval. The goal of this review article is to provide the incidence of the iatrogenic lingual nerve impairment/injury caused by the retrieval based on the review of the existing literature. The retrieval cases were collected with the searching words below using PubMed, Google Scholar, and CENTRAL Cochrane Library database on October 6, 2021. A total of 38 cases of the lingual nerve impairment/injury in 25 studies were eligible and reviewed. Temporary lingual nerve impairment/injury due to the retrieval was found in six cases (15.8%) and all of them recovered between 3 to 6 months after retrieval. General anesthesia and local anesthesia was used for retrieval in three cases, respectively. The tooth was retrieved using lingual mucoperiosteal flap in all six cases. The permanent iatrogenic lingual nerve impairment/injury due to retrieval of the displaced mandibular third molar is considered extremely rare as long as the appropriate surgical approach is chosen based on surgeons’ clinical experience and anatomical knowledge.

      Keywords

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