I had braces in the past (about 12 years ago), and wore a retainer 1-2 times per week since then. My teeth have slightly moved, and my retainer broke a few months ago, so I went to see an orthodontist to see what were my options. Option 1 was to have a new retainer so that my teeth don't move anymore, and option 2 was to have Invisalign for 6-8 months to treat my type 2 malocclusion and misaligned teeth. I went with option 2, but now I am worried about the simulated results.