After the end of the braces period, the doctor will require wearing a retainer for 1 to 2 years to maintain and stabilize the new position of the teeth as well as strengthen the bones and gums, adapting to the new position of the teeth. To achieve the highest orthodontic efficiency, in addition to wearing a retainer for a period of time, people with braces also need to pay attention to how to clean the retainer after braces to achieve the best results. This article will help readers have more information to refer to on how to clean the retainer.