MARPE

MARPE Palatal Expansion in San Diego

MARPE (miniscrew-assisted rapid palatal expansion) is an appliance that widens a narrow upper jaw using small temporary anchor screws, achieving true skeletal expansion that traditional expanders cannot, often without jaw surgery. At Elite Orthodontics Group in San Diego, Dr. Nader Ehsani uses MARPE for older teens and adults to correct crossbites, relieve crowding, and create room before braces or aligners. If you have a narrow upper jaw, crowding, or a crossbite, widening the jaw may be the missing step before straightening your teeth. At Elite Orthodontics Group, we use modern expansion techniques to create space, improve how your bite fits, and support long-term stability, as part of our broader airway-focused orthodontics.

What Is MARPE?

MARPE stands for Miniscrew-Assisted Rapid Palatal Expansion. It is an expander that anchors to the bone of the palate with small temporary screws (miniscrews) rather than relying only on the teeth. That bony anchorage lets MARPE widen the upper jaw itself, producing greater skeletal expansion than a traditional expander, which mainly tips the teeth outward. For many older patients, that difference is what makes non-surgical expansion possible.

Who Is MARPE For?

MARPE is often recommended for:

• Older teens whose jaw growth is more developed
• Adults who still need true upper-jaw expansion
• Patients who are not good candidates for a traditional childhood expander

If you have been told you would need surgery to widen your jaw, MARPE may offer a less invasive path. Dr. Ehsani will confirm at your consultation whether it fits your anatomy and goals.

What MARPE Can Help Correct

Expansion can support treatment for several common problems, including:

• Crossbite correction
• Crowding caused by a narrow upper jaw
• Bite imbalance that affects chewing
• Mismatched upper and lower arches
• Creating space to straighten teeth without extractions, in some cases

By widening the jaw and opening the nasal floor, MARPE can also support better airway space, which is why it features in our airway orthodontics and snoring and sleep apnea care.

How MARPE Works

Treatment follows a clear sequence:

• The appliance is fitted to the upper arch and anchored with miniscrews.
• A small activation key widens the device gradually, a little at a time.
• Expansion happens in a controlled way over a short active period.
• A stabilization phase follows, giving new bone time to fill in and the jaw time to adapt.

Many patients then continue with braces or Invisalign® to refine tooth alignment and finish the bite.

What Does MARPE Feel Like?

Most patients feel pressure or tightness during activation, especially in the first days, and some notice a temporary gap open between the front teeth, which is a normal, expected sign that the jaw is widening. The sensation eases as your mouth adjusts, and our team walks you through comfort tips and exactly what to expect at each stage.

How Long Does Treatment Take?

The timeline depends on your anatomy and goals, but it usually includes a short active expansion period (often a few weeks), a longer stabilization period, and then follow-up orthodontic treatment with braces or aligners as needed. Dr. Ehsani will map out your specific timeline at the consultation.

How Is MARPE Different From Braces or Aligners?

Braces and clear aligners move teeth. MARPE widens the upper jaw itself, which can improve how the bite fits and create room that tooth movement alone cannot achieve. That is why expansion often comes first, setting the foundation before the finishing work of braces or aligners.