A palatal expander, also known as a rapid palatal expander, rapid maxillary expansion appliance, palate expander or orthodontic expander, is used to widen the upper jaw so that the bottom and upper teeth will fit together better.
Separators are tiny rubber bands or springs that your orthodontist places between your back teeth. These separators prepare your mouth for braces by creating a small gap between these teeth. This space allows for the placement of a metal band around your molar, which anchors your braces in your mouth.
This simple device is placed to address severe thumb/finger sucking habit. It involves using a fixed wire crib attached to two back braces.
The Forsus appliance is an orthodontic appliance that is fixed to the teeth. Springs mounted on the side of the appliance force the lower jaw forward upon closure of the jaws retraining the bite and correcting a Class II problem.
The Herbst Appliance is a functional appliance used in some growing patients to stimulate growth of the lower jaw.
A Mara is a fixed appliance consisting of metal caps and small loops that drive the lower jaw forward in order to correct a Class II problem.