Hi Judy,
I found my ulcers came and went with what i was eating. The acidity in foods being the main contributer. Fruit acids in things like grapes, oranges etc gave me them. Vinegars are another one that sets off the ulcers. Also, i was told if you stay on one mouth wash for too long they become inaffective. So to switch between 2 brands every 10 days or so helped.
I don't think there are any miracle solutions. Other than trial and error to find the cause.
Good luck,
Michelle