Traditional removable retainers typically include a metal wire that surrounds the front teeth and is attached to an acrylic arch that sits in the roof of the mouth. The metal wires can be adjusted to finish treatment and continue minor movement of the front teeth as needed.
Aligner-style retainers, or Essix retainers, look similar to clear aligners and offer a more aesthetic alternative to wire retainers. This clear retainer may fit over the entire arch of your teeth, or only from canine to canine (clip-on retainer). It is produced from a mold of your newly aligned teeth.
Fixed retainers consist of wires bonded behind the bottom and/or top teeth. Although the device is usually required no more than a year after wisdom teeth have been extracted, it is often kept in place for life.