Toothache caused by trigeminal neuralgia of vestibular schwannoma: a case report. [Corrected].

Background: Vestibular schwannoma, also called acoustic neuroma, is a tumor composed of Schwann cells that most commonly involves the vestibular division of the 8th cranial nerve. A thorough medical and dental history and properly conducted diagnostic testing and radiographic evaluation are essential in differentiating odontogenic tooth pain from tooth pain of a nonodontogenic origin.

Methods: This report discusses a case of acoustic neuroma mimicking odontogenic pain. A 61-year-old man presented with pain in the lower left quadrant. Medical history revealed peripheral neuropathy and prior exposure to Agent Orange. Diagnostic testing on teeth #19, #20, and #21 ruled out an odontogenic cause for the pain. Brushing of a specific region of the face elicited pain that resembled the patient's chief concern. The patient was referred to a craniofacial pain center with the tentative diagnosis of trigeminal neuralgia. Treatment for trigeminal neuralgia was not successful, prompting referral to the neurosurgery department where magnetic resonance imaging was performed.

Results: Magnetic resonance imaging revealed a moderate-size, lobular, left cerebellopontine angle mass lesion consistent with acoustic neuroma with compression of the left trigeminal nerve secondary to the lesion.

Conclusions: Acoustic neuroma can cause tooth pain secondary to compression of the trigeminal nerve.