MARPE (a miniscrew-assisted rapid palatal expander) is a non-surgical way to widen the upper jaw in adults and older teens whose palate has already fused. Anchored by small mini-implants, it expands the bone of the palate, which can relieve crowding, correct crossbites, and widen the nasal airway. At Smile Arc Orthodontics in 4S Ranch, MARPE is planned and placed by board-certified orthodontists.
For decades, true jaw expansion was thought to be possible only in children, before the mid-palatal suture fuses. MARPE changed that. By anchoring the expander directly to the bone with mini-implants rather than pushing against the teeth, an orthodontist can achieve genuine skeletal expansion in many non-growing patients. For adults in San Diego who were told their only option was surgery or extractions, MARPE is often a welcome alternative.
What Is MARPE and How Does It Work?
MARPE stands for miniscrew-assisted rapid palatal expander. A small appliance is fixed to the roof of the mouth and anchored with several mini-implants (also called TADs, or temporary anchorage devices). You turn a small screw a little each day, following your orthodontist’s schedule, which gradually separates and widens the mid-palatal suture. Over several weeks, new bone fills in the widened space. Because the force is anchored in bone rather than teeth, expansion is more skeletal and there is less unwanted tooth tipping.
Once the target width is reached, the appliance stays in place for a stabilization period while the new bone matures. Your orthodontist then moves the teeth into their ideal positions as needed.
What MARPE Can Address
- A narrow upper jaw or high, vaulted palate
- Crossbite (upper teeth biting inside the lower teeth)
- Dental crowding caused by a constricted arch
- A narrow nasal airway that may contribute to mouth breathing or disrupted sleep
When breathing and sleep are part of the picture, we coordinate with your ENT or sleep physician. See our airway orthodontics and sleep apnea and breathing pages for how these fit together.
MARPE vs. SARPE
Both widen the upper jaw, but they are different procedures:
- MARPE is non-surgical and done in our office, using local numbing for the mini-implants. It is generally lower cost and has an easier recovery.
- SARPE (surgery-assisted rapid palatal expansion) is performed by an oral surgeon, often under general anesthesia, and is more predictable when the bone is very mature or fully fused.
Dr. Ehsani will use 3D imaging to assess your bone and tell you honestly which approach is more reliable for your case. Older patients or those with very dense bone are sometimes better served by SARPE.
Who Is a Candidate for MARPE?
Most healthy adults and older teens with a narrow upper jaw are candidates. Research shows MARPE can successfully expand the palate in many patients into their mid-twenties and beyond, with fewer dental side effects than tooth-anchored expanders. The best way to know is a consultation with 3D imaging, which lets us see the suture and the bone directly.
What Does MARPE Cost in San Diego?
MARPE cost depends on the complexity of your case and whether it is part of a larger treatment plan. Because MARPE is non-surgical and done in-office, it is typically a fraction of the cost of surgical expansion, which involves a hospital, an oral surgeon, and anesthesia. We keep pricing transparent and offer flexible, interest-free in-house payment plans, and we will review the full cost with you up front. See our financing and insurance options.
Schedule a MARPE Consultation in 4S Ranch
To find out whether MARPE is right for you, call (858) 277-8088 or request a complimentary consultation with 3D imaging. Smile Arc Orthodontics is at 17085 Camino San Bernardo, Suite 220, San Diego, CA 92127, serving 4S Ranch, Rancho Bernardo, Poway, and Rancho Santa Fe.
Frequently Asked Questions
Can adults really get a palate expander?
Yes. Traditional expanders only work in children whose palatal suture has not fused. MARPE uses bone-anchored mini-implants to achieve true skeletal expansion in adults, and studies show good results well into adulthood.
Is MARPE painful?
Most patients feel pressure rather than pain, especially in the first days after placement and during turns. Over-the-counter pain relief is usually enough. The mini-implant placement is done with local numbing.
How long does MARPE treatment take?
The active expansion phase usually lasts a few weeks, followed by several months of stabilization while new bone forms. Many cases are part of a broader treatment plan that continues with aligners or braces.
Is MARPE or SARPE better for me?
MARPE avoids surgery and general anesthesia, but it can fail to expand if the bone is already too mature. SARPE is highly predictable and is often the better choice for older patients or very dense, fused bone. 3D imaging guides the decision.
Will MARPE help my breathing?
Widening the upper jaw can also widen the floor of the nasal cavity, which may improve nasal airflow for some patients. Any breathing or sleep concern is evaluated together with your physician.
