It's such a relief to see that other's have gone through this same problem. I have done so much research and always come up empty handed.
I also get what looks like bite marks on the side of my tongue everytime I get dental work done - even a teeth cleaning.
I also have done the same treatments to try and control it - hydrogen peroxide rinses, salt water rinses, mouth wash, brushing and scraping my tongue. It gets the worse when I first wake up.
Something I've noticed is when it's at it's worse I have some kind of head congestion mucus-y type head cold. The mucus coats my tongue and when I eat sugar-y type foods they form a really gross film on my tongue.
I had one dental expert online suggest that it could be some kind of allergy to something they use during the dental work. I have yet to get an allergy test since I need to find a new medical doctor first .. and this also requires me to call my dentist up and get his help with every possible material and substance that could possibly be causing this allergy.
if anyone is interested, i could post a list of the suggested allergies to get tested for.