A retainer, also known as a corrector, is an orthodontic device designed to preserve the results achieved after braces or aligner treatment. It helps keep teeth in their corrected positions while the surrounding bone and soft tissues stabilize.

In some cases, retainers can also provide minor tooth movement correction. They may be removable or fixed, depending on the patient’s needs and the orthodontist’s recommendation. Regular use of a retainer is essential to prevent relapse, maintain proper alignment, and ensure long-term stability of orthodontic treatment results.