Perhaps dialysis helps the mouth ? My husband went to have his teeth cleaned. It had been about 2 years since he last went. Stuff kept coming up so he had a lot of excuses. The hygienist performed a perio-probe. She was surprised and said she was stumped to see improvement in his gums. In the past, he got a lot of "4's and 5's", which means he had deep pockets forming around his teeth (not good). The pockets can be reversed and improved thru good dental hygiene, including frequent cleanings and scaling done by a hygienist. Well...like I said, it had been a long time since he had seen her and since he has diabetes and is on dialysis, he expected the worse. Instead, things improved. We wonder if it's because his diet improved (he mostly sticks to a renal diet) and if dialysis has actually helped his gums by removing some of the toxic junk in his system.