Retainers are custom-made orthodontic devices designed to maintain the alignment of teeth following orthodontic treatment with braces or aligners. These removable appliances are typically made from plastic or a combination of plastic and metal wires. Retainers work by holding the teeth in their corrected positions, preventing them from shifting back to their original misaligned positions over time. Depending on the patient’s orthodontic needs and treatment plan, retainers may be worn full-time initially and then gradually transitioned to nighttime wear only. Consistent retainer use is essential to preserve the results of orthodontic treatment and ensure the long-term stability of the smile. Retainers play a vital role in maintaining a straight and healthy smile for years to come.