One of the most common is trigeminal neuralgia, or TN, which stems from a disorder of the fifth cranial nerve, also known as the trigeminal Teeth and facial pain. Trigeminal neuralgia tic Teeth and facial pain occurs when a blood vessel presses on the trigeminal nerve, according to the Mayo Clinic. Trigeminal neuralgia is often diagnosed by a dentist, but if you've already seen your dentist and they haven't been able to find an obvious cause of your pain, you should visit your GP. Typically tooth-related pain that presents in our office is pretty straightforward to diagnose and treat. View All Oral Care Topics. Try to breathe through your nose as much as possible.