Once your braces have been removed and you have beautiful, well aligned teeth, you will need to wear retainers to keep them that way. At first, you will be asked to wear your retainers all the time, except when eating and brushing your teeth. After one year, when your teeth have had adequate time to stabilize, your will be instructed to wear your retainers at night only.
If you do not wear your retainers as instructed your teeth will move. Rotations and tipping of the teeth may occur and spaces may open between the teeth.