Yes, adults can widen a narrow upper jaw with MARPE, miniscrew-assisted rapid palatal expansion. Tiny screws anchor the expander to the palate so it can separate fused adult bone, usually without surgery, general anesthesia or a hospital stay.
Why can't adults use a regular palatal expander?
The upper jaw is made of two halves joined down the middle of the palate by a seam called the midpalatal suture. In children, that seam is still flexible. A traditional palatal expander attached to the back teeth can gently separate the halves while the child grows.
After adolescence, the suture fuses. A tooth-borne expander in an adult tends to tip the teeth outward instead of widening the bone underneath. For a long time, that meant adults were considered poor candidates for expansion, and surgery was the main way to widen an adult upper jaw.
What about older teens?
Late adolescence is a gray zone. In some older teens the suture is still open enough for a traditional expander, while in others it has already begun to fuse. Rather than guessing from age, 3D imaging shows the suture directly, and that image decides whether a tooth-borne expander or MARPE is the better tool.
What changed with MARPE
MARPE anchors the expander directly into the bone of the palate with micro-screws. Force goes to the bone rather than the teeth, which makes it possible to open the fused suture in many adults. That is why MARPE is described as a non-surgical way to expand the upper jaw for patients who were once told expansion was only for kids.
What problems can a narrow upper jaw cause in adults?
A narrow maxilla often goes unnoticed for years because the symptoms seem unrelated to teeth. Common signs include:
- Crowded upper teeth or a back-teeth crossbite
- A narrow smile with dark spaces at the corners
- Chronic nasal congestion or habitual mouth breathing
- Snoring or sleep-disordered breathing
- Jaw discomfort, clicking or other TMJ symptoms
Because the upper jaw also forms the floor of the nasal cavity, a narrow palate can limit nasal airflow. That link between jaw width and breathing is a big part of why Dr. Gellerman builds airway-focused thinking into orthodontic planning for both younger patients and adults.
How does MARPE work, step by step?
MARPE follows a clear sequence. Your own timeline depends on how much expansion you need and how your bone responds.
1. Diagnosis and 3D imaging
Planning starts with detailed records. Gellerman Orthodontics uses iCAT 3D imaging and an iTero scanner to see the palate, the teeth, the jaw joints and the airway. The CBCT scan in particular helps evaluate airway concerns and shows where micro-screws can be placed safely.
2. Placing the appliance
A small expander, similar in size to a retainer, is fitted to the roof of your mouth and secured to the palate with micro-screws. This is done in the orthodontic office rather than a hospital.
3. Active expansion
You receive a key to turn the expander at set intervals. Each turn applies outward pressure that gradually separates the two halves of the palate. Many patients notice a small gap opening between the upper front teeth during this phase, which is a sign that the bone is widening.
4. Stabilizing
Once the planned width is reached, you keep wearing the device passively for a few months. During that time new bone forms in the widened space and the result becomes stable.
5. Finishing with braces or aligners
Expansion changes the foundation, but it does not put each tooth in its final spot. The last step is usually braces or Invisalign clear aligners to close any gap and align the bite.
How does MARPE compare with other expansion options?
The right option depends on age, bone maturity and the size of the problem. This comparison shows the main differences.
| Traditional expander | MARPE | Surgically assisted expansion | |
|---|---|---|---|
| Typical patient | Growing children | Teens and adults whose suture has fused | Adults who need more than MARPE can provide |
| How it is anchored | Attached to the back teeth | Micro-screws in the palate | Surgery releases the bone, then an expander widens it |
| Setting | Orthodontic office | Orthodontic office | Hospital with an oral and maxillofacial surgeon |
| Anesthesia | None | No general anesthesia | General anesthesia |
| Next step | Often phase two braces later | Braces or Invisalign | Braces, with recovery time after surgery |
For severe jaw mismatches that expansion alone cannot solve, surgical orthodontics remains an option once growth is complete. An evaluation shows where you fall.
Can MARPE help with sleep apnea and breathing?
For some adults, yes. Widening the upper jaw increases the width of the nasal cavity and the volume of the airway, and it creates more room for the tongue. Those changes can reduce symptoms of obstructive sleep apnea and improve nasal breathing when a narrow palate is part of the problem.
Working alongside your physician
Sleep apnea has many possible causes, and not all of them are related to jaw width. MARPE may reduce the need for sleep appliances or CPAP in the right patient, but decisions about sleep treatment are made together with your physician. The 3D airway imaging used during planning helps the team collaborate with other healthcare providers on a complete approach.
Jaw joint comfort
Patients with a narrow upper jaw sometimes also report jaw pain or clicking. If that sounds familiar, the TMJ and TMD treatment page explains how bite and jaw function are evaluated together.
What is daily life like during MARPE?
Most adults are surprised by how quickly the appliance becomes part of the routine. The first week is the adjustment period.
Eating
Soft foods such as pasta, eggs, yogurt and smoothies are easiest for the first few days. Sticky, chewy and very hard foods like caramel, gum and raw carrots can catch on or strain the appliance, so they are best avoided. Cutting food into small pieces helps a lot.
Speaking and swallowing
Having something new on the roof of your mouth can change your speech slightly and increase saliva at first. Both usually settle within days as your tongue gets used to the extra hardware.
Keeping it clean
Food can collect around the appliance, so brush carefully around it after meals and rinse with water or mouthwash. A water flosser makes it easier to reach the spaces near the palate and the micro-screws.
When to call the office
Contact the team if the appliance feels loose, if pain continues instead of fading, or if you are unsure about a turn. If you miss a turn, do not double up; resume the schedule and call if you have questions.
How should you prepare for a MARPE evaluation?
A little preparation makes the first visit more useful. Before your appointment, jot down the symptoms you have noticed, such as congestion, snoring, jaw pain or crowding, and how long you have had them.
If you have had a sleep study or seen a sleep physician or ENT, bring those results or the provider's contact information so the team can coordinate. It also helps to note any past orthodontic treatment, because relapse after earlier braces is a common reason adults start looking at expansion.
Who is a good candidate for MARPE?
You may be a candidate if you are past your growth years and have a narrow upper jaw that affects your bite, your breathing or both. People who were told they needed surgical expansion but want to avoid general anesthesia and a hospital stay are often good candidates to evaluate.
Adults who had braces as teenagers and have seen crowding return are another common group. If the relapse is linked to a narrow upper jaw, straightening the teeth again without addressing width may not hold, so expansion can be part of a more stable second plan.
MARPE is not the answer for everyone. Bone thickness, the maturity of the suture and the overall jaw relationship all matter. That is why the decision always follows imaging and an in-person exam, and why the plan may also involve the broader integrative orthodontics approach the practice uses for airway cases.
MARPE FAQ
Does MARPE hurt?
Most patients describe pressure rather than pain. The palate may feel tight for a short time after each turn, and speech and eating often feel different for the first days while you adjust.
How long does MARPE treatment take?
Active expansion is relatively short. The appliance then stays in place passively for a few months while bone fills in, followed by braces or aligners to finish the bite.
Will MARPE change how my face looks?
The main change is a wider upper arch, which can fill out a narrow smile and relieve crowding. Any effect on facial appearance varies by person and is discussed during planning.
Is there an age limit for MARPE?
There is no single cutoff. Suitability depends on bone and suture characteristics seen on 3D imaging rather than on age alone.
Find out if MARPE is right for you
If a narrow jaw, crowded upper teeth or restless sleep has you wondering about expansion, the first step is a MARPE evaluation with imaging. Contact Gellerman Orthodontics to schedule a visit and get a clear answer about your options.