Clear retainers are orthodontic appliances that are worn after traditional metal braces have been removed to help maintain the position of the teeth. They are made of clear plastic or acrylic and are custom-made to fit the patient's teeth.
Clear retainers are typically worn for a period of time recommended by the orthodontist, usually, at least a year, to ensure that the teeth remain in their new position. Clear retainers can be worn full-time or part-time, depending on the individual's needs and the instructions of their orthodontist.