A high palate, sometimes called a high-arched or “gothic” palate, is one where the roof of your mouth curves upward more steeply and deeply than average instead of forming a broad, shallow dome. You can often spot the signs yourself with a mirror and a finger, though a definitive measurement requires imaging. The shape matters more than most people realize, affecting everything from how you breathe and speak to how your teeth align, and in some cases it points to an underlying condition worth investigating.
What You Are Looking For
Open your mouth wide in front of a well-lit mirror and look at the roof of your mouth. A typical palate has a gentle, wide curve from one side to the other, like the inside of a shallow bowl. A high palate looks more like the inside of a narrow arch or a cathedral vault. The sides rise steeply from the upper teeth, and the peak of the arch sits noticeably higher than you would expect. Some people describe it as a deep groove running along the midline.
You can also feel it. Press the tip of your tongue upward to the roof of your mouth. If your tongue easily contacts the entire width of the palate and it feels broad and flat, your vault is on the shallower end. If your tongue has trouble reaching the highest point, or if the space above your tongue feels like a narrow channel, you are likely dealing with a higher arch. Try fitting your thumb upward into the roof of your mouth: in a very high palate, the thumb can sometimes sit entirely within the vault without touching the sides, whereas in a normal palate the sides close in quickly.
In clinical studies using cone-beam computed tomography (CBCT), researchers measure the palate’s depth at the level of the first molars. One study of patients with impacted canines found an average palatal depth of roughly 15 mm, though individual variation is wide.
The Mirror Test Versus a Professional Measurement
Self-assessment gives you a reasonable first impression, but it has limits. What feels “high” to you might fall within normal range, or what feels normal might actually be clinically significant. Dentists and orthodontists assess palatal shape in a few ways. The simplest is a visual and tactile exam during a routine dental visit, where the clinician looks at vault height, arch width, and whether the teeth are crowded or crossbiting. For precise numbers, CBCT imaging lets clinicians measure palatal height, breadth, and length down to fractions of a millimeter and calculate indices that classify the vault objectively.1PubMed Central. Morphometric analysis of the hard palate using cone beam computed tomography in a Saudi population Researchers also measure the palatal vault angle, the angle formed by lines running from the alveolar ridge to the deepest point of the vault, to classify palates into shallow, average, or deep categories.2PubMed Central. Palatal Soft Tissue Thickness on Maxillary Posterior Teeth and Its Relation to Palatal Vault Angle Measured by Cone-Beam Computed Tomography
If you suspect you have a high palate and it is causing problems, asking your dentist to take a look during your next visit is the easiest path. They can confirm it on the spot and, if needed, refer you for imaging or orthodontic evaluation.
Why Some Palates Grow Higher Than Others
Palate shape is influenced by a combination of genetics, prenatal development, and childhood habits. The palate forms early in fetal life when shelves of bone grow inward from each side of the face and fuse along the midline. Anything that disrupts the timing, force balance, or growth rate of these shelves can affect the final shape.
One of the strongest environmental contributors is chronic mouth breathing during childhood. When a child consistently breathes through the mouth rather than the nose, the tongue drops to a low resting position and stops exerting the gentle outward pressure it normally applies to the palate. Meanwhile, the cheek muscles press inward unopposed. A computational fluid dynamics study found that when the mouth opens, the pressure difference across the hard palate reverses direction, pushing upward with a force of about 88 newtons, which may interfere with the palate’s normal descent as the face grows.3PubMed. Respiratory Fluid Mechanics of the Effect of Mouth Breathing on High-Arched Palate: Computational Fluid Dynamics Analyses A study comparing children who were obstructive mouth breathers (due to enlarged adenoids or tonsils) with nasal breathers found that over half of the obstructive mouth breathers had high palatal depth, compared with about a third of nasal-breathing controls.4PubMed. Comparison of palatal dimension in children with obstructive and habitual mouth breathing
Prolonged thumb sucking and pacifier use during infancy and toddlerhood also play a role. The repetitive upward pressure of a thumb or pacifier presses against the developing palate and can push it higher over time. Research has found a positive correlation between the duration of pacifier use or thumb sucking and the degree of palatal deformation, while longer breastfeeding duration appeared to have a protective effect.5Revista Română de Terapia Tulburărilor de Limbaj şi Comunicare. The Influence of Early Feeding Behavior on the Risk of Developing a Gothic Hard Palate A large French cohort study of children born very preterm found that thumb sucking at age two roughly doubled the odds of a high-arched palate compared with children who did not have that habit.6PubMed Central. Risk Factors for High-Arched Palate and Posterior Crossbite at the Age of 5 in Children Born Very Preterm: EPIPAGE-2 Cohort Study
Prematurity itself is an independent risk factor. The same cohort study found that the youngest preterm infants (born at 24 to 29 weeks) had nearly twice the odds of developing a high-arched palate compared with those born closer to 30 or 31 weeks. Neonatal intubation, which places a tube in the mouth for breathing support, can exert mechanical force on the developing palate during a critical growth window.6PubMed Central. Risk Factors for High-Arched Palate and Posterior Crossbite at the Age of 5 in Children Born Very Preterm: EPIPAGE-2 Cohort Study
When a High Palate Signals a Genetic Condition
In most people, a mildly high palate is simply a normal anatomic variant shaped by the factors above. But a very pronounced high-arched palate, especially when it appears alongside other physical features, can be a marker of certain genetic syndromes. This is worth knowing because in some of these conditions the palate is a visible external clue to problems elsewhere in the body that benefit from early detection.
Marfan syndrome and Ehlers-Danlos syndrome, both connective tissue disorders, are among the best-known examples. The same collagen and fibrillin abnormalities that cause joint hypermobility and cardiovascular complications also affect how the facial skeleton grows. A high-arched palate and crowded teeth are recognized features of both conditions. Researchers have noted that the combination of a gothic palate and high-arched feet (pes cavus) appears across several genetic and systemic disorders, including Marfan syndrome, Ehlers-Danlos syndrome, and Steinert’s disease (myotonic dystrophy), suggesting shared connective tissue mechanisms.7Russian Journal of Stomatology. Combination of gothic palate and pes cavus — pattern or coincidence?
Craniosynostosis syndromes, where the skull bones fuse prematurely, frequently involve palatal changes. In Muenke syndrome, one of the more common craniosynostosis conditions, about two-thirds of patients in one study had a high-arched hard palate.8PubMed Central. The Palatal and Oral Manifestations of Muenke Syndrome (FGFR3 related craniosynostosis) The researchers noted that these patients are more susceptible to recurrent ear infections, dental misalignment, and hearing loss, making early identification of the palatal shape clinically useful.
Cerebral palsy is another condition with an established link. In the EPIPAGE-2 cohort, children with cerebral palsy had more than double the odds of a high-arched palate, likely because altered muscle tone affects the balance of forces on the growing palate.6PubMed Central. Risk Factors for High-Arched Palate and Posterior Crossbite at the Age of 5 in Children Born Very Preterm: EPIPAGE-2 Cohort Study
None of this means that finding a high palate in the mirror should trigger alarm. The vast majority of people with somewhat higher vaults do not have a genetic syndrome. But if you notice a very narrow, steeply arched palate alongside things like unusually flexible joints, long limbs, a family history of aortic problems, or recurrent ear issues, mentioning the palatal shape to your doctor gives them one more diagnostic clue.
Functional Problems a High Palate Can Cause
A high palate is not just a cosmetic oddity. Because the palate forms the floor of the nasal cavity, a higher vault means a narrower nasal passage, which can contribute to nasal obstruction and chronic mouth breathing in a self-reinforcing cycle: mouth breathing during childhood may promote a higher palate, and a higher palate then makes nasal breathing harder. People with narrow, high palates often report snoring, dry mouth on waking, and a general sense that their nose always feels somewhat blocked.
Dental crowding is another common consequence. A narrow arch provides less room for the adult teeth to erupt in alignment, leading to overlapping, rotated, or impacted teeth. The upper molars may sit inward relative to the lower molars, creating what orthodontists call a posterior crossbite. Speech can also be affected: the palate is the surface against which the tongue creates most consonant sounds, and when the vault is too high or too narrow, certain sounds become harder to produce cleanly. Some people with high palates report difficulty with “t,” “d,” “n,” and “l” sounds, all of which require the tongue tip to contact the palate.
For infants, a high palate can make feeding genuinely difficult. The baby needs to compress the nipple against the palate to extract milk, and if the vault is too high, the tongue cannot reach it effectively. Clinical guidance suggests that special nipples or feeding techniques developed for cleft palate babies can be adapted for high-palate infants, and one case report found that a standard large-hole nipple designed for older infants solved the problem without specialized equipment.9PubMed. Feeding an infant with high arched palate by high flow rate bottle nipple
Something That Looks Like a High Palate but Is Not
If you run your tongue along the roof of your mouth and feel a hard bony ridge or lump along the midline, you might assume your palate is abnormally high. In many cases, what you are feeling is a torus palatinus, a benign bony growth on the palate that is remarkably common. Depending on the population studied, anywhere from a small fraction to a third or more of adults have some degree of torus palatinus. The growth can be flat, nodular, or lobulated, and it sits right along the palatal midline.
A torus palatinus changes the surface contour of the palate and can make it feel higher or more irregular than it actually is, but it does not change the underlying vault shape. Research using CBCT has found that in some populations, people with torus palatinus actually tend to have shorter and wider palates rather than narrower and deeper ones.10PubMed Central. Prevalence of Torus Palatinus and Association with Dental Arch Shape in a Multi-ethnic Cohort So if your palate feels lumpy and high in the center but your dental arch looks broad and your teeth are not crowded, you may be feeling a torus rather than a true high-arched palate. A dentist can distinguish the two in seconds.
What Can Be Done About It
Treatment depends on age, severity, and what problems the high palate is causing. In children, the palate is still growing and the midpalatal suture (the seam where the two halves of the palate meet) has not yet fused, so widening the arch is relatively straightforward. Rapid palatal expansion (RPE) uses a device cemented across the roof of the mouth that is gradually opened with a small key, pushing the two halves of the palate apart. Over several weeks, new bone fills in the gap, and the arch becomes wider and the vault shallower. This is one of the most common orthodontic interventions in children with narrow, high-arched palates and crossbites.
In adults, the midpalatal suture has largely fused, making traditional RPE ineffective. This is where miniscrew-assisted rapid palatal expansion (MARPE) comes in. Small titanium screws are placed into the palatal bone to anchor an expansion device, applying enough force to split the fused suture. A systematic review and meta-analysis found that MARPE produces measurable skeletal changes, with significant forward movement of the upper jaw and relatively stable vertical dimensions.11PubMed Central. Skeletal Effects After Miniscrew-Assisted Rapid Palatal Expansion on Sagittal and Vertical Dimensions: A Systematic Review and Meta-Analysis In patients with more mature suture fusion, a combined approach using corticopuncture (small perforations in the bone to weaken resistance) alongside MARPE achieved successful suture opening in about 87% of cases, with a mean expansion of roughly 3.6 mm.12PubMed Central. Clinical Application of Surgical Guides in MARPE: Observational Research Surgically assisted rapid palatal expansion (SARPE), which involves a minor surgical procedure to release the suture before expansion, remains an option for cases where MARPE alone cannot achieve enough movement.
For people whose high palate is linked to a breathing or tongue posture problem, orofacial myofunctional therapy (OMT) is a less invasive approach. OMT involves exercises that retrain the muscles of the tongue, lips, and face to encourage proper resting tongue posture (tip of the tongue against the palate behind the front teeth, body of the tongue spread against the roof of the mouth). Research has found that OMT can improve low tongue posture and reduce nasal airway obstruction.13PubMed Central. Low Tongue Posture Improvement Effect of Orofacial Myofunctional Therapy Comprehensive Study of Nasal Ventilation Condition Using Computational Fluid Dynamics and Dental Arch Morphology OMT alone will not widen an adult’s bony palate, but it can help prevent further narrowing in growing children, improve breathing patterns, and serve as a complement to expansion treatment to reduce relapse.
The Diet Connection Most People Have Never Heard Of
There is a broader anthropological angle to palate shape that often surprises people. The shift from tough, unprocessed foods to soft, cooked diets over the course of human evolution has been linked to smaller faces and jaws. Animal studies have demonstrated that subjects raised on soft diets develop shorter, narrower faces with less robust bone than those raised on harder diets, because chewing generates mechanical strain that stimulates bone growth.14Journal of Human Evolution. Effects of food processing on masticatory strain and craniofacial growth in a retrognathic face The hypothesis is that modern soft diets contribute to the epidemic of narrow dental arches, crowded teeth, and, by extension, higher palates that orthodontists now spend much of their careers treating.
This does not mean you can widen your palate by chewing tough steak. By adulthood, the bony architecture is largely set. But it does suggest that for young children, encouraging harder-textured foods during the years when the jaw and palate are actively growing could support broader arch development. Some researchers and clinicians in the airway-focused orthodontics community now view palate shape as partly a disease of modern living, alongside myopia and sedentary lifestyles, driven by an environment that no longer matches what our skeletal development expects.
Tongue Tie and Its Relationship to Palate Shape
Tongue tie (ankyloglossia), where a short or tight band of tissue anchors the tongue to the floor of the mouth, gets a lot of attention in parenting circles, and its connection to palate shape is real but sometimes overstated. When the tongue is tethered, it cannot easily rest against the palate or exert the lateral pressure that helps the arch grow wide. Over time, especially during childhood growth, this restricted posture can contribute to a narrower, higher vault. Clinical case reports have documented patients with tongue tie presenting with a combination of high-arched palate and open bite, where orthodontic treatment successfully changed tongue posture and produced palatal changes even without surgical release of the tie.
The debate is about how much tongue tie contributes independently versus other factors like mouth breathing or sucking habits that often co-occur. Releasing a tongue tie in a newborn or infant is a minor procedure, but it will not reshape a palate on its own. The release removes a mechanical restriction; the actual palatal remodeling depends on whether the tongue then adopts a normal resting posture against the roof of the mouth, which is where myofunctional therapy often enters the picture as a follow-up.
How Clinicians Define “High” in Numbers
If you are curious about where the clinical line falls, the answer is less precise than you might hope. There is no single universal cutoff that separates a “normal” palate from a “high” one. In research, investigators have used various approaches. One mouse-model study defined high-arched palate as a vault height measuring more than two standard deviations above the population mean, a threshold that identified about 17% of affected animals.15PubMed Central. A quantitative method for defining high-arched palate using the Tcof1 +/− mutant mouse as a model In human studies, palatal height indices (the ratio of vault height to width) are sometimes used, with higher ratios indicating a more vaulted palate. But these measurements vary by age, sex, and ethnic background, and there is no globally agreed-upon index value that clinicians use as a bright line.
In practice, orthodontists and ENTs tend to judge palate height relative to expected norms for a patient’s age and facial type, combined with whether the shape is causing functional problems. A palate that is clearly high but causes no breathing difficulty, speech issues, or dental crowding might not require treatment at all. The clinical decision is driven more by symptoms than by geometry alone.