Front view beautiful girl with yellow hoodie.

Maxillary Transverse Deficiency

A narrow upper jaw can lead to crowding, crossbite, and improper bite alignment.

Schedule Consultation

What Is Maxillary Transverse Deficiency

Understanding Maxillary Transverse Deficiency

Maxillary transverse deficiency is a skeletal condition in which the upper jaw is too narrow relative to the lower jaw and cranial base. This reduced maxillary width can disrupt dental arch coordination, compromise nasal airway space, and affect facial balance. Treatment commonly focuses on widening the upper jaw to restore proper transverse relationships, functional occlusion, and stable facial structure.

Portrait of a smiling woman with dental health infographic overlay.

Clinical Presentation

Clinical presentation of maxillary transverse deficiency, frontal view.
Frontal View

Frontal Analysis

A constricted maxilla is characterized by a narrow upper jaw, which can affect smile width and overall facial proportions.

Key Assessments:

Narrow upper jaw
Reduced smile width
Buccal corridor prominence
Posterior crossbite
Clinical presentation of maxillary transverse deficiency, profile view.
Side View

Profile Analysis

From the side, a constricted maxilla may contribute to reduced midfacial support and subtle flattening of the upper jaw region.

Key Assessments:

Reduced maxillary width
Midface under-supported
Subtle profile flattening
Limited transverse projection
Occlusal View maxillary transverse constriction.
Bite View

Occlusal Relationship

A constricted maxilla often results in transverse discrepancies, commonly presenting as posterior crossbite.

Key Assessments:

Posterior crossbite
Narrow dental arch
Transverse discrepancy
Crowding of upper teeth 

Maxillary Transverse Deficiency

Common Functional Issues

Icon representing eating and chewing.

Eating

A narrow upper jaw can lead to uneven bite contact and inefficient chewing patterns.

Icon representing speech.

Speech

Speech is usually unaffected but may be influenced by crowding or crossbite relationships.

Icon representing TMJ symptoms.

TMJ

Bite imbalance can contribute to uneven joint loading and possible discomfort over time.

Icon representing breathing.

Mouth Breathing

Often associated with mouth breathing due to reduced nasal airway space.

Icon representing nasal congestion.

Nasal Congestion

A narrow palate can limit nasal airflow, affecting breathing efficiency and sleep quality.

Icon representing physiological factors.

Psychosocial Effects

Crowding and narrow smile appearance can impact confidence and overall smile aesthetics.

Before & After Gallery

View Gallery
Maxillary Transverse Deficiency

Orthognathic Surgery

Surgically assisted rapid palatal expansion (SARPE) is used to widen the upper jaw in adults when it can no longer be expanded with orthodontics alone. A small surgical release of the palatal bones allows a palatal expander to gradually increase the width of the jaw, improving the bite and creating space.

Before

Illustration of a narrow upper jaw before surgically assisted rapid palatal expansion.

The upper jaw is too narrow, often causing crowding, crossbite, and limited space for proper alignment.

During

Illustration of the midpalatal split with the expansion appliance engaged during SARPE.

A controlled surgical release allows a palatal expander to gradually widen the upper jaw over time.

After

Illustration of the widened upper jaw with the expander in place after SARPE.

New bone forms, stabilizing the widened jaw and improving long-term function.

Life-Changing Benefits

Widening and repositioning the upper jaw improves function, breathing, and dental alignment.

Learn If You’re a Candidate
Improved chewing efficiency
Enhanced nasal breathing
Better dental alignment
Reduced crossbite issues
Improved airway function
Increased confidence

Surgical Management of Maxillary Transverse Deficiency

SARPE

Surgically assisted rapid palatal expansion corrects maxillary transverse constriction by releasing the skeletal sutures that restrict the upper jaw from expanding. A precise osteotomy separates the upper jaw, allowing a palatal expander to gradually widen the arch over several weeks following surgery. This procedure creates the skeletal space needed to accommodate the teeth, correct the crossbite, and improve nasal airway function. Each case is planned with advanced imaging and digital simulation to ensure a controlled, stable expansion and a smooth recovery.

Presurgical Considerations

Smiling college girl studying outdoors campus.

Growth Completion

Key Assessment Points:

Insufficient orthodontic expansion
No change in arch width
Crossbite unchanged
SARPE versus MARPE timing
Smiling young woman with curly blonde hair and braces

Orthodontic Treatment

Key Assessment Points:

Arch Development
Midline Correction
Bite Coordination
Orthodontic Finishing
Clinical jaw evaluation with a patient.

Nasal Airway & Transverse Function

Key Assessment Points:

Nasal airway assessment
Breathing pattern evaluated
Posterior crossbite analysis
Palatal morphology assessed

Timeline for Maxillary Transverse Deficiency

Month 0

Initial Consultation

History, clinical evaluation, 3D scans, X-rays, photographs, and impressions

2–4 weeks after initial consultation

Treatment planning visit

Records reviewed, orthodontist coordinated, treatment plan presented

6–12 weeks prior to surgery

Pre-surgical orthodontics

The expander is placed, and the teeth are positioned for surgery

2–4 weeks prior to surgery

Pre-op medical clearance

Medical exams, lab work, and final instructions

Outpatient procedure

Surgery Day

Surgical release of the midpalatal suture to allow controlled expansion

5-7 days after surgery

Device activation begins

Expander is activated daily per protocol. First by the surgeon, then by the patient at home.

3-4 weeks after surgery

Active expansion complete

Once the target width is achieved, the activation is discontinued

1-4 months after surgery

Consolidation phase

The expander remains in place while new bone forms and stabilizes

3-5 months after surgery

Long-term — Retention & follow-up

The expander is removed, and post-surgical orthodontics is initiated

Experience Matters

“We personally plan your care, perform your surgery, and guide your recovery. No residents, no fellows, no handoffs.“

Choosing the right surgical team matters. You should feel informed, comfortable, and confident in every step of the process. At our practice, your care is provided by one of the most highly trained and experienced jaw surgery teams in the country.

When you come to our office, you meet directly with your surgeons. We are the ones who plan your treatment, perform your surgery, see you after surgery, and remain personally available to you throughout your recovery. Unlike larger institutions, your care is not delegated to residents, fellows, or doctors in training. Every critical aspect of your treatment is handled by your surgeons.

Learn more

Founding Members of the American Society of Orthognathic Surgery

What Our Patients Are Saying

Handsome young man, blue shirt, short hair, smiling
★★★★★

Dr Lee and the team at Northeast Facial are incredible. I was very nervous about my procedure but Dr Lee walked me through it step by step, never once making me feel rushed. Silvanna at the front desk went above and beyond to help me schedule an appointment that worked for me. I would highly recommend NEFOSS!

Stephanie Brown

★★★★★

“I had double jaw surgery done with Dr. Jacob in June 2021. I am extremely happy with my results. No more jaw pain and chewing problems. I also feel much more confident with my new smile. The surgery was definitely well worth it, thanks to Dr. Jacob and his team!”

Amelia Chen

★★★★★

“I would definitely recommend Dr. Jacob and his team at NEFOSS! Dr. Jacob and the team of doctors are very knowledgeable about all aspects of the TMJ process. They are such a nice group of doctors! The office staff is also very helpful and very friendly.”

Tiffany Puopolo

Frequently Asked Questions

Here are some common questions about maxillary transverse deficiency and its treatment.

Close Up Doctor Checking Smiling Woman
Take the first step of your journey.

Schedule a private consultation today

Book A Consultation
Scroll to Top