Hello Blue_Bird: Well... I don't have problems with my teeth related to purging. In fact, I hadn't had any significant problems with my teeth in a long time. But then, a couple of weeks ago, I was in for my 6 month cleaning & check-up. And during the cleaning the hygienist mentioned the enamel was flaking off of the backs of my front lower teeth! My dentist didn't say anything about it when he checked my teeth. But after I had left the dentist's office I noticed those teeth now feel really rough against my tongue. So I guess I'm going to have to go back in & see what, if anything can be done. I don't have a lot of money to spend on expensive dental work.