Keri had crowding and rotations of her mottled enamel teeth. She asked for Invisalign treatment to make a cosmetic improvement to her smile. When teeth are not properly aligned, the margins of the gums appear irregular and at varying heights. Keri now has nicely aligned teeth and the whitening agents reduced the discoloration of the enamel. The treatment time was 15 months. Notice the improvement in alignment of the gingival margins of the teeth and the improvement in the broadness of the smile. The teeth do not appear canted with respect to the smile lines of the lips.