A lingual brace works in the same manner as a conventional fixed brace, giving maximum control and movement of your teeth.
It works by applying gentle, continuous pressure on your teeth, that slowly shifts them into a more atheistically pleasing position.
The difference between the two is that with a lingual brace the brackets and wires that comprise the hidden braces are positioned behind the teeth, on the tongue side, instead of in front of them, as with a standard brace.