Palatal Expander
Home>Common Questions> Palatal Expander

Palatal Expander

Macdonald Orthodontics

Palatal Expander | Macdonald Orthodontics

What does a palatal expader do?

The palatal expander "expands" (or widens) your upper jaw by putting gentle pressure on your upper molars each time an adjustment is made. The images below will instruct you about when and how to adjust your expander. When you achieve the desired expansion, you will wear the appliance for several months to solidify the expansion and to prevent regression.

Step 1

Palatal Expander - Step 1 | Macdonald Orthodontics

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

Step 2

Palatal Expander - Step 2 | Macdonald Orthodontics

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

Step 3

Palatal Expander - Step 3 | Macdonald Orthodontics

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.

Step 4

Palatal Expander - Step 4 | Macdonald Orthodontics

Press back and down toward the tongue to remove the key. The next hole for insertion of the key should now be visible.


Our Mesa orthodontic office is central to Scottsdale, Tempe and Paradise Valley. The Gilbert orthodontic office is located near Chandler, Apache Junction and Queen Creek neighborhoods.