What is a retainer or post-orthodontic plate?

A retainer is a removable orthodontic device that must be used by the patient after the treatment period to keep the teeth in order, so it is also called a post-orthodontic plate or retainer plate. The retainer begins to be used after the end of orthodontic treatment, and the duration of its use varies completely according to the specialist’s opinion and the patient’s condition. Therefore, cleaning retaining teeth during this period is very important.