This spring like device is attached to the lower front and upper rear braces for 4-5 months and worn continuously. It's success, unlike headgear, does not depend on patient cooperation.
Over the past twelve years that it has been available, we've found it to be a reliable, relatively comfortable, and predictable method to achieve headgear type tooth movement without much help from the patient. No nagging about wearing headgear is required if the Forsus is used. Check out the pictures of the Forsus.