These are braces which clip onto the teeth. They consist of a plastic plate with metal clips to hold it in place, and metal springs or screws to move the teeth. These braces are less common as they have a more limited control of tooth movement. They are particularly useful for straight forward problems, especially in younger children. Sometimes they can be used as part of treatment before moving to fixed braces. Despite being removable, they do need to be worn 24/7. They should only be removed for cleaning or for contact sports or swimming. If worn half the time, then it will not take twice as long to move the teeth, they will just stay in place!