First, an impression will be made and sent to a lab, where a computer will scan it and design a series of virtual models that show how your teeth need to move to become straight. Then, a series of clear plastic aligners will be fabricated based on those models. Your aligners will be designed just for you to increase their effectiveness. Every two weeks or so, you’ll replace your current aligner with the next one in the sequence so your teeth continue to shift over time. You’ll also visit the office about every six weeks to make sure your treatment is progressing properly. Most patients complete treatment in under two years.