After termination of therapy with a fixed orthodontic device, teeth tend to return and take the original position. If our efforts were not in vain, there are retention films that are made on the basis of a new corrected tooth position after removing the locks. They are completely transparent and aesthetically acceptable so that patients are happy to wear them. They help us keep our teeth in the desired position. After removing the fixed denture, retention film or the so-called. The splints are initially worn as often as possible and after a few months they are recommended to wear at night during sleep.