I have been using invisalign since march 2008 and I have had good results and i have seen a lot of sucessful movement. I did, however, have to get my trays redone and may go for a third attempt.
I have become lazy and used my invisalign usually only at night, but at most about half a day. My sister did the same and she has been done her moving trays and has been onto her final tray for what I believe has been around two years, and yet she has yet to find that he teeth have kept their position.
I am worried now that my teeth with shift after my invisalign moving trays are done due to my lack of constant use. I don't know what I'll do. Help?