The initial concern was a worn down tooth in the back it was filed down and then we waited two weeks to see if the leukoplakia would improve and it didn't.... mind you I do have one metal filling on that side of the mouth. I will mention it to my ENT and my dentist and see what they say, thanks! My naturopath is looking into the value of IV Vitamin C treatment to and I am going start taking a green tea EGCG supplement as well...