Invisalign straightens your teeth using clear plastic trays or aligners molded to fit your teeth. Each set (top and bottom) of trays is worn for approximately two weeks and treatment can be completed in as little a 3 months. The trays are created from computer generated models of your teeth. Each set of trays has differences and slightly moves your teeth into the desired position. Over time, as you progress through the trays, your teeth become straighter and straighter!