+1 for Biotene. Great stuff. It cut down on my canker sores down by at least 3/4. The rest I figure came from the salt and vinegar kettle chips I was eating every day. Not sure if it was the sharpness of the chips or the acid of the vinegar or both but, I was almost guaranteed a canker sore after eating them.
Since going primal? Not a one (chips or sores...).