Invisible teeth aligners treatment time is based on how much the teeth needs to be moved or rotated. The more crooked your teeth are, the longer it will take to heal. Cear Aligner Treatment usually takes between 10 and 24 months. But if you are an adult and used to wear braces in childhood, and your teeth are shifted slightly over the years, then you may need invisible teeth aligners for as little as 10 weeks.