I started the invisalign treatment on january 12th, 2010. I was very worried and skeptical at first seeing that they were just plastic trays. Let me assure you though, it works...
Yes! It works great.
The worst thing for me was always getting canker sores on the lower right side of my cheek. The attachment that I had on scraped along side my cheek that a canker sore would come every once in a while.