A narrow upper jaw isn't just a bite problem. It can crowd teeth, narrow the nasal airway, and make it harder to breathe through the nose, especially during sleep. Widening the upper jaw, a process called palatal expansion, has long been part of orthodontic treatment for children, whose jaws are still growing and separated by a soft, unfused suture down the middle of the palate.
The challenge has always been what to do once that suture fuses, typically in the mid-to-late teens. For decades, the only real option for widening an adult jaw was SARPE, surgically assisted rapid palatal expansion, an approach that requires a surgeon to actually cut the bone before it can be widened. MARPE (Miniscrew-Assisted Rapid Palatal Expansion) changed that. By anchoring directly into the bone with TADs instead of relying on surgery, MARPE allows us to widen a fused adult palate without a surgical procedure, in most cases.
Here's how MARPE and airway-focused expansion work, how they compare to the traditional approaches, and why widening the jaw is about more than just making room for teeth.
Orthodontists have traditionally focused on jaw width for one reason: room for teeth. A narrow jaw often means crowding, and widening it creates space. But jaw width also shapes the floor of the nasal cavity. A narrow upper jaw frequently means a narrow nasal airway, which can make nose breathing more difficult.
This matters more than it might seem. Chronic mouth breathing, especially during sleep, has been linked to poorer sleep quality, snoring, and in children, can even affect facial growth patterns over time. Widening the jaw doesn't just create room for teeth, it can also widen the nasal floor, making nasal breathing easier.
This is the core idea behind airway orthodontics: treating jaw and bite development with an eye toward airway and breathing function, not just tooth alignment. It's not the right lens for every patient, but for those with a genuinely narrow palate, it's an important piece of the picture.
The right approach to widening a jaw depends heavily on age, because the palate itself changes over time.
Traditional expanders (Hyrax or Haas expanders) work well in children and younger teens. Their palate hasn't fused yet, so a traditional expander, a device that attaches to the back teeth and is turned gradually with a key, can widen the jaw by gently separating the still-open suture. This has been a reliable, well-established approach for decades and remains the standard for growing patients.
Once the palate fuses, usually in the mid-to-late teens, traditional expanders lose most of their effectiveness. Turning a traditional expander against a fused suture tends to tip the teeth rather than truly widen the jaw, which doesn't address the underlying skeletal or airway issue.
SARPE (surgically assisted rapid palatal expansion) was, for a long time, the only real solution for a fused palate. SARPE involves a surgeon making precise cuts in the bone to release the fused suture, after which an expander can widen the jaw the way it would in a younger patient. It's effective, but it's a surgical procedure, with the recovery, cost, and risk that comes with any surgery.
MARPE offers a non-surgical alternative for many of these same cases. By anchoring TADs directly into the bone on either side of the palate, MARPE can generate enough force to widen a fused adult jaw without cutting the bone first. For appropriately selected cases, this means achieving a result that used to require surgery, without the surgery. MARPE isn't a fit for every severe case, some still require a surgical approach, but it's expanded who can be treated non-surgically in a meaningful way.
MARPE and airway-focused expansion may be worth discussing if you or your teen have:
A thorough evaluation is the only way to know whether MARPE, a traditional approach, or something else entirely is the right fit for your case. We use CBCT imaging to assess both bone structure and airway space in detail, giving us a much clearer picture than a standard x-ray alone before making a recommendation.
MARPE treatment starts with a detailed evaluation of your palate and bite, including CBCT imaging to assess bone structure and airway space and plan precise placement. The MARPE appliance itself is anchored to the palate using several TADs, then activated gradually, similar in concept to a traditional expander, but generating force directly against the bone rather than relying on the teeth.
Most patients turn the appliance daily for several weeks, a process guided closely by our office. Once the desired width is achieved, the appliance stays in place for a period of stabilization, allowing new bone to fill in the widened suture, before any further orthodontic treatment continues.
A few things to expect during MARPE treatment:
MARPE treatment cost varies based on case complexity and whether it's part of a broader orthodontic treatment plan or a more standalone expansion phase. At Starling Orthodontics, MARPE treatment generally adds $2,500 to $4,500 to the cost of care, in addition to standard TAD placement fees.
Because MARPE can help you avoid a surgical alternative like SARPE, many patients find the overall cost, and the recovery, considerably more manageable than the surgical path would have been. We'll walk through exactly what MARPE would add to your specific treatment plan at your consultation.
We accept most PPO insurance plans, and orthodontic benefits typically apply to the full treatment plan. We also offer in-house payment plans and accept CareCredit® financing.
What does MARPE stand for?
MARPE stands for Miniscrew-Assisted Rapid Palatal Expansion. It uses TADs (temporary anchorage devices) anchored into the bone of the palate to widen the upper jaw without surgery, even after the palate has fused.
Is MARPE the same as MSE?
They're closely related. MSE (Maxillary Skeletal Expander) refers to a specific brand of expansion device, while MARPE describes the broader Miniscrew-Assisted approach. In practice, the terms are often used together or interchangeably to describe the same general treatment concept.
How is MARPE different from SARPE?
SARPE (surgically assisted rapid palatal expansion) requires a surgeon to cut the fused palatal suture before it can be widened. MARPE uses TADs anchored into the bone to generate enough force to widen the palate without surgery, in appropriately selected cases.
Can adults get their jaw widened without surgery?
In many cases, yes, using MARPE. Once considered impossible without surgery, jaw expansion in adults with a fully fused palate is now often achievable with MARPE, depending on the specific case.
Does jaw width really affect breathing?
For some patients, yes. A narrow upper jaw is frequently associated with a narrower nasal airway, which can make nasal breathing more difficult and contribute to mouth breathing or snoring, particularly during sleep. Widening the jaw can, in these cases, improve nasal airway space as a side effect of orthodontic treatment.
Will a traditional expander work for my teenager?
It depends on their age and whether their palatal suture has fused. Younger teens whose palates are still open generally respond well to a traditional Hyrax or Haas expander. Once fused, a traditional expander becomes far less effective, and MARPE or another approach may be more appropriate.
How do you decide if MARPE is right for me?
We start with CBCT imaging, a 3D scan that gives us a detailed look at your bone structure and airway space, not just a flat picture. That, combined with a clinical exam of your palate and bite, tells us whether MARPE, a traditional expander, or another approach fits your case best.
Airway and expansion cases require both the right technology and the judgment to know when each option truly applies. Patients throughout Nashville, Brentwood, and Williamson County trust Starling Orthodontics with these cases because we offer MARPE as a genuine non-surgical option, something not every orthodontic practice provides, and because we're honest about which approach actually fits your case.
A few things patients consistently mention:
If you or your teen have a narrow jaw, ongoing breathing concerns, or have been told surgery would be needed to widen your palate, it's worth finding out whether MARPE could change that. We'll evaluate your case honestly, using CBCT imaging to see the full picture, and explain exactly what's possible.
Schedule your consultation today: call (615) 507-1660 or request an appointment online at starlingorthodontics.com. We serve patients from Nashville, Brentwood, Franklin, Nolensville, and throughout Williamson County.
Please call (615) 507-1660 or click below to schedule your appointment online.
Please call (615) 507-1660 or click below to schedule your complimentary orthodontic consultation online.
