I recently changed dentists and of course they want to do all kinds of stuff to "help", replace old crowns etc. I was also told that as you age your teeth tend to crowd as your face narrows with age. hmmm. also that it appears as though i am grinding my teeth as i sleep. So they suggested i try the invisalign, that it would help with many of the "issues". I am not sure I am up for a year of what i have been reading. Any thoughts from anyone close to my age that has had it done.