The application provides a system for repositioning teeth from an initial tooth arrangement to a final tooth arrangement and methods of making and using the same. The system includes: a) at least two first appliances which are duplicate of each other having a geometry selected to reposition the teeth from the initial tooth arrangement to a first intermediate arrangement or the final tooth arrangement； b) one or more intermediate appliances having geometries selected to progressively reposition the teeth from the first intermediate arrangement to successive intermediate arrangements including a last intermediate tooth arrangement, each of the one or more intermediate appliances having at least one duplicate of itself； and c) at least two final appliances which are duplicate of each other having a geometry to progressively reposition the teeth from the initial tooth arrangement or the last intermediate arrangement to the final tooth arrangement.
