I am eight months out of treatment and still cannot use the flouride trays due to the burning that makes my tounge sore for a couple of days after each use. I do have some saliva(thank God and Ethyol)and am able to eat some very spicy foods, but I try the flouride every couple of weeks to see if I can tolerate it or not without success. Has anyone else had this problem? I wonder if the Foam would help if it is the same flouride strength as the gel?

Weldon M.