Rapid Palatal Expander (RPE)
 Purpose: Widening the back teeth and jawbone.
How does it work? Turning the miniature jack-screw applies pressure through the teeth to expand the jaw bone. The upper screw is in the center of the palate while the lower is behind the front teeth.
How long will the expander be needed? Upper expansion is generally completed within one month while lower expansion requires approximately three months. Removable expanders take longer. Expansion must be retained, often with the same expansion appliance, for a minimum of four months. Most expanders are left in place six to nine months.
How does it feel? Excess saliva will make you "slurpy" until your mouth adjusts to your appliance. You will feel pressure on the teeth or roof of the mouth after turning the screw. The pressure lasts one to five minutes. There should be no discomfort after the first week. If pain develops, turn the screw backwards until it is comfortable and call the office.
“Due to the nature of the bone structure, upper expansion is usually rapid with 1 turn every day and lower expansion is slower usually 1 to 2 turns per week.”
Tips!
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- Count every turn. Never turn more than the recommended turns.
- Always turn in the direction of the arrow until the next hole appears, then remove the turning lever.
- If the expander is loose, stop turning this screw. Loose bonded expanders should be worn as if it is removable, but the expander must be removed and the teeth cleaned after every meal. Rinse the uncovered teeth nightly with fluoride. Call for an appointment so we can re-cement it back in.
- A rather large space may open between the front teeth. This space will reduce on its' own once the turns are stopped.
- If the screw resists turning, offers no resistance, or pulls apart, stop the turns and call our office for an adjustment.
- Be sure to brush around the appliance very thoroughly, check for plaque and use your fluoride toothpaste daily.
- Speech will be slurred and swallowing difficult at first until the tongue adjusts to the appliance. Practice reading out loud.
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