Invisalign® straightens teeth using a series of clear, plastic aligners. For teeth to move from their current crooked position to where they are supposed to be, pressure must be applied. With braces, this is done using metal brackets with wires threaded between them. With Invisalign®, we apply pressure using a series of clear aligners that place specific amounts of pressure on specific teeth. When worn in a series, they put the right amount of pressure on the teeth to migrate the teeth to the correct position.