Anne J. Yoon DDS MS Orthodontist

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The Herbst appliance is designed to correct & improve your bite, the position of your jaws and your facial profile.  Specifically It is designed to position your lower jaw forward encouraging the lower jaw to catch up in growth to your upper jaw, while allowing you to function (speak, swallow, and eat) in a new jaw position.

It consists of an upper & lower component which are cemented in place.  The upper component consists of an expander which you’ll turn for the first 2-4 weeks (see below).  The lower component functions as an anchor

Herbst Upper Expander

It is often necessary to expand the upper jaw while the lower jaw advances to maintain a proper relationship between your upper and lower jaw. 

  • You will turn your expander ____x a day for _____days.

  • Starting on: _______  Finishing on: _______

  • The expander remains in place after active expansion for 4 -6 months to allow the bone to remodel and maintain the newly expanded upper jaw position.

Functioning with your Herbst: 

  • These sliding pistons will allow the jaw to open and close, but keep the jaw forward in the desired position.

  • At first your mouth will feel full and speaking and chewing will be temporarily awkward.

  • You may also notice more saliva than normal, but this will decrease as you become accustomed to the appliance.

Office Visits:

  • The Herbst is checked every 6-10 weeks and can be advanced or moved forward by the doctor at the time of your visit.

  • It stays in place for a total of about 12 months

Oral Hygiene & Care:

  • Hard, sticky, chewy and crunchy foods can loosen the cement and pull the braces from the teeth.

  • Do not play with the appliance with your tongue or fingers.


  • The most common problem with the Herbst is the rod coming out of the tube when the patient opens their mouth too wide.

  • This is easily fixed at home by having the patient open overly wide again and sliding the rod back into the tube as shown below.

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