Invisalign ClinCheck is a 3D Virtual Treatment Plan used to generate a simulation that shows how your smile will transform over time. Each incremental movement corresponds to one clear aligner. In this case, there were 21 aligners. Typically, our doctors recommend wearing an aligner for 2 weeks before switching to the next one, so this case would require around 10 months to complete the treatment. Thanks to the ClinCheck video you can see your future smile before starting orthodontic treatment.