Teeth move in a natural response to light pressure over a period of time. Pressure applied by using a variety of orthodontic hardware (appliances) the most common being a tiny bracket attached to the front of the teeth and connected by an arch wire. Periodic changing of the wires puts pressure on the teeth. At different stages of treatment your child may wear headgear, elastics (rubber bands) a positioner or a retainer. Most orthodontic appointments are scheduled 4 to 6 weeks apart to give the teeth time to move.