Mandibular Dislocation in a Patient Diagnosed with Bell's Palsy: A Case Report and Literature Review

Mandibular dislocation is a musculoskeletal disorder often associated with trauma and anatomical predispositions, which can result in severe pain and difficulty moving the mandible. Some conditions, such as Bell's palsy, can mimic signs and symptoms of mandibular dislocation, confusing some professionals during diagnosis. For this reason, a detailed anamnesis and clinical examination, combined with complementary tests such as computed tomography (CT) and magnetic resonance imaging (MRI), are necessary for a reliable diagnosis. The aim of this case report was to explore the management of mandibular dislocation, highlighting the importance of a detailed anamnesis and the use of complementary tests in the differential diagnosis of complications associated with temporomandibular disorders. Patient, 66-years-old, was referred to by her neurologist with a suspected relapse of Bell's palsy. After initial assessment, the suspicion was ruled out and a left-sided mandibular dislocation was hypothesized. A CT scan was requested, which confirmed the diagnosis. The treatment adopted was a maneuver to reposition the mandibular condyle in the articular fossa and the use of an anterior partial plate to stabilize mouth opening and closing. The patient received counselling therapy on more stable mandibular movement and was monitored to prevent recurrences. Confirmation of mandibular dislocation requires careful assessment, combined with complementary tests for an accurate diagnosis that excludes other conditions such as Bell's palsy. Conservative treatment, with reduction maneuvers, counselling therapy and the use of the Front Plateau, were effective in recovering mandibular function.