During the final stages of orthodontic treatment, your doctor will likely recommend you begin wearing retainers to allow your teeth to settle into their new positions while preventing them from drifting back into misalignment. A retainer is a custom-fitted appliance designed for you. Once your teeth have achieved optimal orthodontic alignment, they can be made of a plastic base with a wire frame, or can be made entirely of clear plastic that completely covers your teeth. Removable retainers maintain alignment while providing the flexibility to be taken out at meal times, reducing the limitations that a fixed retainer would place on the diet. They're also easier to maintain and keep clean by comparison. The amount of time each day and overall time span you will need to wear your retainers will be determined by your doctor. It is important to follow their recommendations to best promote the longevity of your orthodontic alignment.