Accidental Displacement of Mandibular Third Molar into the Submandibular Space: A Case Report

Abstract

Background:
The accidental displacement of a mandibular third molar is a rare complication that can occur during routine extraction. Common sites of displacement are the submandibular, sublingual, lateral pharyngeal and the perrysomandibular spaces. When displacement occurs, it can have a negative psychological impact on the patient and could also affect the patient’s functional ability especially if infected. Also, there is risk of spreading cervicofacial infection. The management varies from conservative observation to surgical retrieval of the displaced teeth.

Aim:
The purpose of this article is to report a rare complication of tooth extraction in which a lower third molar was displaced into the submandibular space during its extraction.

Case Report:
A 23-year-old male presented with a mandibular third molar displaced into the left submandibular space during its extraction. The patient presented with evidence of facial nerve palsy, swelling and a sutured fresh incision wound from an attempted surgical retrieval in the left submandibular region. The displaced tooth was measurably retrieved under general anaesthesia.

Conclusion:
Displacement of extracted teeth can occur into fascial spaces. This can be prevented by properly planned extraction.