How a Palatal Expander Helps Widen the Upper Jaw

The palatal expander “expands” (or widens) your upper jaw by putting gentle pressure on your upper molars each time an adjustment is made. The animation below will instruct you about when and how to adjust your expander.palatal expander model

When you achieve the desired expansion, you will wear the appliance for several months to solidify the expansion and to prevent regression.

Adjusting the palatal expander

You can also download these instructions in a printable PDF document.

Step 1

In a well-lit area, tip the patient’s head back.

Step 2

Place the key in the hole until it is firmly in place.

Step 3

Push the key toward the back of the mouth. You will notice the fender will rotate and the new hole will appear. The rotation stops when the key meets the back of the expander.