A Palatal Expander Can Transform Your Smile for Life!

A palatal expander, also known as a rapid palatal expander, rapid maxillary expansion appliance, palate expander, orthodontic expander, Haas, or Hyrax, is used to widen the upper jaw so that the bottom and upper teeth will fit together better. Although the use of an expander is most common in children it can be and has successfully been used in adults,

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. 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.

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Step 1

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

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Step 2

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

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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.

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Step 4

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

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Lindenhurst, NY

Lindenhurst Location
221 N. Wellwood Avenue
Lindenhurst, NY 11757
(631) 225-8000