Cathy, a nurse from Tewksbury, MA, had braces when she was a teenager. Her teeth shifted over the years, and she did not like the flaring of her upper teeth. Plus, the crowding of her lower teeth was making them harder to keep clean. The thought of wearing braces again was not appealing to her, so she opted to use Invisalign. This allowed her to invisibly straighten her teeth and took only five months to complete.