Tighten the Wire
If your teeth have shifted because you haven't worn your retainer
, they need to be moved back into straight alignment.
If your retainer has a wire on it, often tightening this wire can put pressure on your teeth & straighten them again. This movement must be slight, however. If the retainer doesn't have a wire, then it usually can't move teeth...It's just meant to hold them. The orthodontist knows.