Carla had braces in the past but from not wearing her retainers through the years her teeth had shifted. Since there was minimal correction needed, Invisalign Express was recommended by Dr Michaelson. Invisalign Express can work for patients with slight crowding and small spaces, usually patients who had braces previously and have relapsed. Dr Michaelson placed the Invisalign aligners which were changed every 2 weeks by Carla. Her teeth are now straight and treatment was less than 3 months.