I wore braces for about 4 years (horrible experience), no retainer after that, now 10 years later, my top teeth have shifted. The best way to describe it is that I have gaps between my 4 front teeth and my teeth appear to be crawling out of my mouth in photos... do you think Invisalign will work in my case? Here is a link to 3 photos of my teeth - most are side profiles: Flickr: LoriAugust2009's Photostream Constructive opinions are greatly appreciated. Also, has anyone just had Invisalign on the upper teeth without doing the lower teeth? Wouldn't that also cut the cost in half?