title: Facial nerve paralysis following mandibular trauma: a case report.
abstract: A strong posteriorly directed force applied to the mandible resulting in fracture, can also displace the mandibular condyle towards the external auditory canal or superiorly against the mandibular fossa, causing its penetration into the middle cranial fossa or even the fracture of the temporal bone. We report the case of a 30-year-old male patient victim of a bicycle accident that developed facial expression muscles paralysis on the left side soon after the trauma. On physical examination he presented left side postauricular ecchymosis, diminished muscular tonus of the left mouth angle and difficulty to close the left eye, he did not present clinical signs of facial fractures. The neurological and CT scan examination revealed fracture of the left temporal bone with total facial expression muscles paralysis. The patient was referred to the neurosurgical team for evaluation and they opted for a conservative treatment. After 3 months the patient showed a marked improvement with almost normal facial expression muscle movements. The trauma dynamics and treatment details are discussed.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Dr. Carmino Caricchio Municipal Hospital Tatuapé, São Paulo, Brazil.
authors.forename: M
authors.initials: M
authors.lastname: Zillo Martini
authors.forename: H
authors.initials: H
authors.lastname: Gomes De Oliveira Neto
authors.forename: A
authors.initials: A
authors.lastname: Takahashi
authors.forename: S C
authors.initials: SC
authors.lastname: Pardo Kaba
authors.forename: E H
authors.initials: EH
authors.lastname: Shinohara
mesh_terms: D000328:Adult; D005155:Facial Nerve Diseases / Q000209:etiology*; D005158:Facial Paralysis / Q000209:etiology*; D006801:Humans; D008297:Male; D008338:Mandibular Injuries / Q000150:complications*; D012887:Skull Fractures / Q000150:complications*; D013701:Temporal Bone / Q000293:injuries*