Hi! I am 18 and a freshmen in college. I have had bad enamel my whole life so i have needed many fillings. Just this past couple of years though, they have started coming out. I have had a couple different dentists so I do not think it is their fault. Just this past month though, four have come out, so Im thinking there is something wrong. I do not eat candy or gum because of my teeth and I brush, floss, and rinse 2 times a day. Could there be an underlying problem?