A rare case of mandibular third molar displaced into submandibular space: A complication of mandibular third molar extraction

• Published in: Clinical case reports 2023-10, Vol.11 (10), p.e8101-n/a
• Main Authors: Nadeem, Abdullah, Vohra, Laiba Imran, Ahsan, Areeba, Mushahid, Hasan, Tariq, Rabeea, Rizwan, Mahima, Gul, Maryam, Raufi, Nahid
• Format: Article
• Language: English
• Subjects: Case Report; Case reports; Edema; Foreign bodies; Fractures; Infections; Local anesthesia; Localization; mandibular; Medical imaging; Neurology; Radiography; submandibular space; Surgeons; Surgery; Sutures; Teeth; third molar displacement; Tomography
• ISSN: 2050-0904; 2050-0904
• DOI: 10.1002/ccr3.8101

Accidental displacement of mandibular third molars or their roots into neighboring anatomical spaces, notably the submandibular region, during extraction, is a rare but significant complication. Comprehensive preoperative assessment, meticulous surgical techniques, and precise radiographic imaging play pivotal roles in successful management. Adhering to established protocols is imperative to mitigate potential complications and ensure optimal outcomes. In this report, we emphasize the critical importance of comprehensive preoperative preparation to tailor surgical approaches and techniques in accordance with recognized surgical principles. Oral and maxillofacial surgery often involves the extraction of impacted lower third molars, a common surgical procedure. However, this procedure can present potential complications such as hemorrhage, tissue damage, infection, alveolar osteitis, paresthesia, and mandible dislocation. Unintentional displacement of a mandibular third molar or its root fragments into adjacent anatomical areas, such as the maxillary sinus or submandibular space, is a rare intra-operative exodontia complication that is seldom documented. A 44-year-old male patient presented with complaints of pain, discomfort, and limited mouth opening. He had previously attempted to have a tooth extracted, but the procedure resulted in a misplaced tooth. A painful, indurated swelling was observed at the patient's left mandibular angle. Radiographic analyses revealed a radiopaque lesion resembling the third molar tooth root. Utilizing orthopantomography and CT images, the misplaced root in the left submandibular region was accurately located. The tooth was successfully extracted following the elevation of a lingual flap. The patient was prescribed antibiotics and painkillers for 7 days, and he reported an uneventful recovery with no complications on the eighth postoperative day. Accidental displacement of lower third molars or root fragments into neighboring anatomical areas is a rare but potentially concerning complication. Common sites of displacement include the submandibular, sublingual, and pterygomandibular spaces. Risk factors for displacement encompass improper use of surgical instruments and variations in patient anatomical characteristics. The ease of extraction can be influenced by various factors, including the degree of impaction, root structure, and dental inclination. Recommended screening examinations include panoramic radiography, intraoral