Hi Grey,
I, too, had canker sores for years. Mine were also in response to biting my mouth or sometimes with no known cause. Thought it was normal, or at least a normal response to stress. 1-2 per month. I've only had one since I went gluten free and it was right after being accidentally glutened. Funny that you have more.
However, before diagnosis, my baby brother (an MD and MPH) said to eat garlic, preferably raw. So every time I get a sore, I make home-made hummus or Greek salad or ceasar salad. Cooked garlic is less potent but helps too. It clears them up within a day and seems to help with the pain right away. Anyway, it can't hurt, unless you're allergic to garlic.
I'm also very careful with toothpaste and haven't changed mine in 10 years. Whenever I try a new one, I get mouth sores. So, you could try a new one.
And I'd try the B-12 too. I just started taking the sub-lingual version.
~Laura
QUOTE(grey @ Jul 19 2007, 03:07 AM)

Hi all,
Hoping someone might have some suggestions about coping with canker sores? I've gotten them my whole life, either with no cause or in response to mouth trauma (biting the inside of my lip, by accident, I'll usually get a canker sore on that site). Since going gluten-free, I've had more sores, and I now have a real doozy of a set on the upper left.
I'm also curious if anyone's been dx'd w/ aphthous stomatitis. I've read a little bit, but it's unclear to me whether all of these mouth ulcer are AS or only some, and how you tell.
So, if someone has an over- the-counter gluten-free remedy, or a way to get rid/less of them, or just has experience with them, I'd love to hear about it.