Hello, the so-called removable orthodontic appliance refers to a removable orthodontic device attached to teeth or mucous membranes, which can be taken off or worn by beauticians and doctors at will. Also known as movable orthodontics, movable orthodontics is still very good. It consists of a base, a fixer and various springs. There are many kinds of mobile orthodontics, such as ordinary mobile orthodontics, functional orthodontics and circular orthodontics.