Chronic tongue and lip biting while eating

I have been biting my tongue, inside my upper and lower lips, and inside my cheeks for well over a year now. I went to the VA and they
assumed it was a dental issue and would not refer me to a specialist. I went to my dentist and she wanted to put crowns over perfectly good teeth to "see if that would work." I do have cervical degenerative disc disease and nerve issues for about 50 years now. I googled and found out that in the brain there is a section called "pons" that controls a few functions, chewing is one of them. I was wondering if anyone else has had this problem and if so what was done to stop the biting and if it had anything to do with the brain (pons)? What specialist would I go to to get testing, and should I go to Mayo since not many doctors I have been to know anything about my problem? Thanks!