A palatal expansion appliance can markedly increase the width of the upper jaw. A wider jaw allows upper and lower teeth to fit together.
This permits teeth and jaws to function well and contributes to a broader, more attractive smile. For some patients, expansion may prevent the need for extraction of permanent teeth because space is created for permanent teeth.
To activate the orthodontic palatal expander, insert the key into the hole of the screw, push towards the back of the mouth until you see the next hole appear, then remove the key.