Functional Appliances are removable braces which aim to alter jaw growth. They are best used during maximum adolescent growth (between the ages of 11-15). They are generally used in   patients who have prominent upper teeth or a small lower jaw. Such appliances can 
significantly improve jaw relationships and facial aesthetics and are often used prior to fixed appliances to achieve the best possible results. 

Functional Appliances work quickly if worn well. 

For more information on Functional Appliances click on the two links below from the British Orthodontic Society   

British Orthodontic Society information and video on Functional Appliances

British Orthodontic Society Functional Appliances Leaflet