I am 31 years old and have had gym recession issues since my teens. I have always been told that the gun will never recover and there is nothing that I can do except to practice good hygiene going forward and that my teeth with be fine. Lately I am particularly worried about one tooth, my front bottom. It has always had the most extreme recession of all. Recently it has been very sensitive and even painful. I'm worried that it may fall out. Is this possible? What can I do to fix this?