In my late 30's, I decided it was time to get my teeth fixed. I'd never had braces as a youth. I had canines that were rotated and protruding in front of my other teeth. The rotation was caused by severe crowding. Every time I'd go for a regular cleaning, my dentist would say "you should look into getting braces, it's very difficult to keep these areas clean". So, finally, I decided to meet with an orthodontist. We discussed treatment options, and one of those options was Invisalign. It was slightly more expensive than traditional metal braces, and a little more than ceramic brackets as well.
We started the process, and determined that, in order to make room for my teeth, extraction would be better than IPR. So, off to the surgeon to have 4 premolars extracted (to keep things even), along with that errant wisdom tooth of mine. After my mouth had healed from that, I got my first set of trays. I went to the ortho and had 13 attachments put on my teeth, 7 on top and 6 on bottom. She then put the first set of trays in and I thought "Oh My, this is never going to work." She filed down some of the attachments to make it easier to get the trays on and off, and had me try a few times to get them on and off. After she was satisfied, she sent me home with 4 sets of trays and directions to come back in 8 weeks.
At first I thought I had made the biggest mistake of my life. I didn't think I'd be able to do it. But, as time went on, I noticed movement - those gaps where my missing teeth were were closing, the canines were getting to where they should be, and in general, my teeth were getting straighter.
It was 19 months ago that I got my first set of trays, and I am done with the first course of treatment and awaiting my refinement trays. I had a couple of teeth that didn't move quite as well as we'd have hoped the first time around, so we are going to work on them again. All in all, I'm thrilled. I have straight teeth, and 90% of the people I know had no idea was I doing this.
Eat what you want
Take them off when necessary
Cons: Requires a LOT of commitment
Good oral hygiene a must
Can be uncomfortable, especially initially