I do not believe Gabapentin HEALS anything.

It seems to block signals of pain, in the CNS part of the body.
(in the spinal cord).

Studies have shown only about 30% of patients really experience any usable pain control. There is a quick tolerance, and typically doctors raise doses because of this.

I have a post about Gabapentin and Lyrica here:
first read about neurons here:
http://neurotalk.psychcentral.com/post828704-7.html

this then is the drug post about gabapentin/lyrica:
http://neurotalk.psychcentral.com/post829091-8.html

Really how gabapentin works and why it does not work for many is not well understood yet....years after this drug has become available.

How pain in your mouth sets off pain in other parts of the body, is thought to be a chemical inflammatory reaction. Damaged peptides from damaged nerves circulate in the body and in some people the immune system reacts to these as "invaders" and causes inflammation of nerve tissue elsewhere. This is just one theory however.

Eating good foods, Omega-3s, and keeping B12, folate, and B6 in amounts needed for repair may help. Zinc also is used in tissue repair. Vit C and other antioxidants too.

What you are going thru seems pretty horrific to me. I'd be using an ice pack now and then and also anti-inflammatory drugs like aspirin or naproxen. Perhaps some lidocaine viscous gel might take the edge off...but it would have to be applied several times a day.

Gabapentin does not restore anything, and is only for symptom control, if it works.

We have a dental forum, here where you can ask Bryanna for some advice too:
http://neurotalk.psychcentral.com/forum89.html