Tiffini
Well you are certainly right. Given the number of doctors you have seen, you would think that someone would have gotten the diagnostic procedures right, and come to a firm conclusion. Any dentist is competent to do a "brush biopsy" of suspect tissues, and oral surgeons are the ones most likely to do an incisional biopsy, either of which would give you a diagnosis. That is IF there is something obvious there to biopsy. A white patch in a smoker