Seeing your surgeon is advised.
Please research facial nerve damage. If I am not mistaken, there is a nerve series that runs on the side of the face from approx. the temple to the jaw bone that can become inflamed with dental work/infection, and for reasons unknown. I believe this is seen more often in people with MS. There have been treatments successful in relieving the pain. I cannot recall the name of this pain as the word is a little lengthy. You really should not have to live with pain.
Perhaps Google, facial nerve pain or dental, facial pain. More on this if I come accross the name in my searches...
Okay Trigeminal Neuralgia is the name of the facial nerve pain associated with MS. It can be triggered by MS and tooth can be treated/pulled in an effort to determine source of pain - incorrectly, or it can be pain as a result of dental work / infection that does not stop when work is completed.
When properly diagnosed there are medicinal and natural remedies recommended. Just a possibility, good luck!