My top four front teeth have been a little loose for about a year now. I went to the dentist after they had been feeling loose for a couple months, and he said I have very healthy teeth it was nothing to worry about; it should go away on its own. But it's been a year and they're still loose! There is no pain or sensitivity, just the looseness. I don't believe I was doing anything like tugging or on them or thrusting them with my tongue -- however, I find that I have been doing that since they became loose. When it feels like my teeth have been pushed in a little because of the looseness, I use my tongue to push them back out, and I can kind of feel them click back into place. What could this be, and what should I do? Thanks!