The Forsus Spring is one of the numerous Herbst-clones that are based on the Herbst-Appliance. It is a forward-acting appliance that is used for the treatment of the retruded lower jaw. The advantage of the Forsus Spring as opposed to the classical Herbst-Appliance is that it can be clipped onto a fixed appliance (multi-bracket appliance). This allows two different things to be treated at the same time – correction of the bite and straightening of the teeth. This means that treatment duration is a bit shorter which is obviously an advantage for the patient. Unfortunately, the use of fixed springs in conjunction with a multi-bracket appliance often results in broken brackets and wires. This means that this kind of treatment can prove to be very labour-intensive.
Tip: Overall, the Forsus Spring is a modern, comfortable addition to a fixed appliance and is to be recommended where a retruded lower jaw needs to be corrected quickly and quietly.