If the lower front teeth sit in front of the upper front teeth when the mouth closes, you or your child may have an underbite. Some underbites are primarily caused by tooth position, while others reflect a difference in how the upper and lower jaws have grown. That distinction matters because braces can correct many dental underbites, but a significant skeletal underbite may require a different plan.
At Parker Wentz Orthodontics, we evaluate the teeth, bite, jaw relationships, growth, facial balance, and treatment goals before recommending care. An examination can clarify whether the best next step is observation, early treatment, braces, clear aligners, or consultation with an oral and maxillofacial surgeon.
What Is an Underbite?
In a typical bite, the upper front teeth sit slightly in front of the lower front teeth. With an underbite, that relationship is reversed: the lower front teeth meet edge-to-edge with—or sit in front of—the upper front teeth.
Underbites range from subtle to pronounced. In some patients, the teeth are the primary issue. In others, the upper jaw may be relatively small or positioned farther back, the lower jaw may be relatively prominent, or both jaws may contribute.
An underbite is sometimes confused with an anterior crossbite. An anterior crossbite may involve only one or a few upper teeth sitting behind the lower teeth. The term underbite is more often used when the front-tooth or jaw relationship is reversed more broadly. Both deserve an orthodontic evaluation because the correct diagnosis affects treatment timing and options.
You can see an overview of underbites and other common orthodontic problems on our website.
What Causes an Underbite?
An underbite can develop for several reasons, including:
- Inherited patterns of upper- or lower-jaw growth
- An upper jaw that has not developed as far forward as the lower jaw
- A lower jaw that grows more prominently
- Upper or lower front teeth that erupt at unfavorable angles
- A functional shift in which the jaw moves forward to bring the teeth together
- A combination of dental and skeletal factors
Because different causes can create a similar appearance, photographs alone cannot determine the best treatment. The orthodontist needs to evaluate how the teeth fit, how the jaws relate, which permanent teeth have erupted, and how much growth may remain.
What Signs Should Parents Watch For?
An underbite may be noticeable when a child smiles or bites down, but other signs can be less obvious. Consider an orthodontic evaluation if you notice:
- Lower front teeth consistently sitting ahead of the upper front teeth
- Front teeth meeting directly edge-to-edge
- The lower jaw shifting forward or to one side during closure
- Difficulty biting into food with the front teeth
- Uneven or accelerated wear on the front teeth
- A prominent lower jaw or a flatter-looking upper-jaw profile
- Speech concerns that may be related to the bite
- A family history of significant underbites or jaw surgery
These signs do not establish the diagnosis or mean treatment must begin immediately. They are reasons to have the bite evaluated rather than waiting to see whether it becomes more pronounced.
When Should a Child With an Underbite See an Orthodontist?
The American Association of Orthodontists recommends an orthodontic checkup no later than age seven. A child can be evaluated earlier if an underbite, crossbite, jaw shift, or other developing concern is already visible.
By age seven, children usually have a mixture of baby and permanent teeth. That allows the orthodontist to assess eruption, jaw development, and how the upper and lower front teeth meet. An early visit does not automatically mean early braces. Some children are best monitored while others may benefit from treatment during a particular stage of growth.
Learn more about early orthodontic treatment and how we decide between intervention and observation.
Can Early Treatment Correct a Child’s Underbite?
Early treatment can be helpful for selected children, particularly when the upper jaw is not developing forward as expected or when a tooth position is causing a functional shift. Depending on the diagnosis and the child’s stage of growth, options may include an expander, braces, elastics, or a growth-guiding appliance such as reverse-pull headgear.
The goal may be to improve the front-tooth relationship, remove a functional interference, encourage more favorable jaw development, or reduce the severity of the problem while growth is active.
Early treatment does not guarantee that a child will never need braces again or that future jaw surgery can always be avoided. Jaw growth can continue into the teen years, and underbites may change as the lower jaw grows. Families should understand both the potential benefit and the uncertainty. Long-term monitoring remains important even after an early correction looks successful.
Can Braces Fix an Underbite?
Braces can correct many underbites when tooth position is the main cause. They may be used with elastics or other appliances to move the upper and lower teeth into a healthier relationship.
The key question is whether moving the teeth can create a functional, stable bite without pushing them beyond healthy limits. Braces move teeth; they do not make a fully grown jaw substantially shorter or move a significant skeletal discrepancy into a normal relationship.
For a mild dental underbite, orthodontic treatment alone may be appropriate. For a more pronounced skeletal underbite, braces may still be part of treatment, but they may need to be coordinated with corrective jaw surgery.
Can Clear Aligners Treat an Underbite?
Clear aligners may be suitable for some mild or primarily dental underbites. Aligners can move teeth and, in selected cases, may be combined with attachments or elastics to help improve the bite.
They are not the right choice for every underbite. A significant skeletal discrepancy cannot be corrected simply by changing from braces to aligners. The decision depends on the movements required, periodontal support, facial balance, growth, and how consistently the patient can wear the trays.
An orthodontic evaluation is the best way to compare braces and aligners for the specific bite rather than choosing an appliance based only on appearance or convenience.
When Is Jaw Surgery Considered?
Corrective jaw surgery, also called orthognathic surgery, may be considered when the jaws themselves are significantly out of position and tooth movement alone cannot create the intended facial and bite correction. Surgery is generally planned after facial growth is substantially complete and is coordinated between the orthodontist and an oral and maxillofacial surgeon.
In a combined surgical plan, orthodontic treatment is usually performed before and after surgery. The braces or aligners position the teeth appropriately within each jaw, while surgery corrects the skeletal relationship between the jaws.
Surgery is not recommended for every underbite. Some adults with milder discrepancies may be candidates for orthodontic camouflage, in which the teeth are moved to improve the bite without changing the underlying jaw relationship. Camouflage has limits and involves tradeoffs. A thoughtful consultation should explain the ideal treatment, reasonable alternatives, expected benefits, limitations, and risks before the patient decides.
What Happens at an Underbite Evaluation?
During the first visit, the orthodontic team will listen to your concerns and evaluate more than the position of the front teeth. The assessment may include:
- How the upper and lower teeth fit together
- Whether the jaw shifts when closing
- The position and inclination of the front teeth
- Facial balance and jaw relationships
- Which permanent teeth have erupted
- How much growth may remain
- Digital photographs, scans, and appropriate imaging
Dr. Parker Wentz will explain whether the underbite appears dental, skeletal, or combined and whether treatment should begin now, be monitored, or involve another specialist.
Will Retainers Be Needed After Underbite Treatment?
Yes, retention is generally part of maintaining the result after active orthodontic treatment. Retainers help hold the teeth in their corrected positions while the surrounding tissues adapt. The recommended retainer design and wear schedule depend on the movements completed and the patient’s growth and bite.
Retainers cannot control major future jaw growth, so growing patients with an underbite may need continued observation even after the teeth have been corrected. Learn more about orthodontic retainers and why long-term wear matters.
Schedule an Underbite Evaluation in Seminole
If your child’s lower front teeth sit ahead of the upper teeth—or if you are an adult wondering whether an underbite can be treated without surgery—an orthodontic evaluation can replace uncertainty with a clear diagnosis and realistic options.
Parker Wentz Orthodontics sees patients at our Seminole orthodontic office. Request a complimentary exam to learn whether observation, early treatment, braces, clear aligners, or a coordinated surgical plan may be appropriate for you or your child.