An overbite before and after shows the upper front teeth going from covering too much of the lower front teeth to a healthy overlap of 2 to 4 millimeters, with the lower teeth visible again when your child smiles and talks. The change is functional as much as visual. Teeth meet evenly instead of wearing against each other, the lower teeth stop striking the tissue behind the upper front teeth, chewing and certain speech sounds improve, and protruding front teeth move into a safer position behind the lip. What the result looks like depends heavily on your child’s age, because a growing child and a finished teenager offer an orthodontist very different amounts to work with. Below we explain what the before actually looks like, what changes, why two similar overbites produce different results, and what to expect at each age.
What Does an Overbite Look Like Before Treatment?
An overbite before treatment looks like upper front teeth that cover much more of the lower front teeth than they should when the back teeth are closed. In a deep case the lower front teeth are barely visible or disappear entirely, and the smile looks top heavy because only the upper teeth show. Parents usually notice the effect before they can name it.
The signs are easier to spot in ordinary moments than in a mirror. A child whose lower teeth vanish in photographs when they smile normally has a deep overlap. A chin that looks set back or sunken in side-profile photos points toward a lower jaw sitting behind where it should. Front teeth with flattened or chipped edges at eight or ten years old are wearing against each other rather than meeting cleanly.
Behavior tells you as much as appearance does. Children compensate quietly for a bite that does not work, chewing on one side, tearing food with the back teeth, or avoiding apples and sandwiches without ever mentioning why. Those habits are worth noticing because they signal that the overlap has crossed from cosmetic into functional, which is the threshold where we start evaluating bite problems seriously.
How Bad Is a Severe Overbite?
A severe overbite is one where the upper teeth cover 90 to 100 percent of the lower front teeth. At that depth the lower incisal edges often contact the tissue behind the upper front teeth or the roof of the mouth directly, which causes inflammation and gum recession over time. A healthy overlap sits at 2 to 4 millimeters, covering roughly 25 to 30 percent of the lower teeth.
Severity runs on a scale between those points. Coverage past about 50 percent is what orthodontists call a deep bite. Between 50 and 90 percent, the concern is uneven wear and jaw strain. Past 90 percent, tissue contact becomes the more urgent problem because soft tissue damage is harder to reverse than tooth position.
What Is the Difference Between an Overbite and an Overjet?
An overbite is vertical overlap and an overjet is horizontal protrusion. Overbite measures how far down the upper front teeth sit over the lower ones, while overjet measures how far forward they stick out. The two terms get used interchangeably in ordinary conversation, and the difference changes what a before and after looks like.
A deep overbite corrected looks different straight on, because the lower teeth reappear. A large overjet corrected looks different in profile, because the upper teeth and the upper lip move back. Many children have both, and in those cases the after shows change from both angles.
What Actually Changes After Overbite Treatment?
Overbite treatment changes the tooth overlap, the way the lower face looks when the bite closes, speech and chewing, the wear pattern on the teeth, and the injury risk to the front teeth. Five things change, and only the first one is visible in a photograph. The other four are the reasons an orthodontist recommends treatment in the first place.
The table below lays out what shifts between the before and the after, drawing its overlap measurements from Cleveland Clinic guidance and its injury figures from prospective research on overjet and dental trauma.
| What changes | Before | After |
|---|---|---|
| Tooth overlap | Upper teeth cover more than 50 percent of the lower front teeth, sometimes all of them | A healthy vertical overlap of 2 to 4 millimeters with the lower teeth visible |
| Lower jaw and profile | The chin can look set back or sunken in side view when the bite closes | A more balanced facial profile with the lower jaw sitting in a more relaxed position |
| Speech and chewing | Trouble with certain sounds, difficulty biting into foods like apples and sandwiches | Cleaner contact for speech sounds and even, efficient chewing on both sides |
| Gum and tooth wear | Lower teeth strike the tissue behind the upper front teeth or the palate, and front edges flatten | Teeth meet evenly, which stops premature enamel wear and tissue irritation |
| Injury risk | Protruding front teeth sit exposed and are far more prone to chipping and sports injuries | Front teeth tucked safely behind the lip, with measurably reduced fracture risk |
That last row carries more weight than most families expect. A prospective study following 1,413 schoolchildren for a year found that children with an overjet of 6 millimeters or more carried 3.37 times the risk of traumatic dental injury, with injuries peaking between ages 8 and 12. A separate population study of 1,546 preschoolers found children with overjet above 3 millimeters were 3.8 times as likely to have suffered severe dental trauma.
Does an Overbite Affect Chewing?
Yes, an overbite affects chewing when the overlap prevents the teeth from meeting edge to edge. A child with a deep bite cannot use the front teeth to bite through food properly, so they compensate by tearing with the back teeth or chewing on one preferred side. One-sided chewing wears that side faster and loads the jaw joint unevenly.
The after is usually noticeable at the dinner table before it is noticeable in the mirror. Parents report children eating apples and corn on the cob again without being asked to try, which is a better measure of success than any photograph.
Is It Harder to Talk With an Overbite?
Yes, it can be harder to talk with an overbite, and a deep bite or large overjet sometimes produces a lisp. Several speech sounds require the tongue to reach a specific point behind the upper front teeth, and an abnormal overlap moves that contact point out of reach. The s and z sounds are affected most often.
Correcting the bite removes the physical obstacle but does not automatically retrain the habit. A child who has spoken around an overbite for years may keep the substitution afterward, which is why some children benefit from a short course of speech practice once the teeth are in position.
Why Do Two Similar Overbites Get Different Results?
Two similar overbites get different results because one may be dental and the other skeletal. A dental overbite comes from where the teeth sit in the bone, while a skeletal overbite comes from how the two jaws are proportioned, and those two causes respond to completely different treatment. They can look nearly identical from the outside.
A dental case means the jaws are in a reasonable relationship and the teeth have erupted into the wrong vertical position. Braces move those teeth directly, and the result is predictable within a standard timeline. A skeletal case means the jaws themselves sit wrong, often a lower jaw that is set back, and the teeth may be positioned correctly within jaws that do not match each other.
This is the honest reason comparing your child to someone else’s before and after online tells you very little. The photo shows a starting point and an ending point with none of the information that determined the path between them. A cephalometric X-ray, which shows the profile of the jaws, is what separates the two categories, and our orthodontist reads that film before making any prediction about what a result will look like.
Can Braces Fix a 100% Overbite?
Braces can fix a 100 percent overbite in most cases, particularly when the cause is dental. A complete overlap responds to a combination of intrusion, which moves the front teeth up into the bone, and extrusion, which brings the back teeth further into the bite to open it. Both movements happen through the archwire over the course of treatment.
Bite turbos often assist. These are small raised surfaces bonded behind the upper front teeth or onto the lower molars that keep the back teeth from fully meeting, which frees the front teeth to move. They feel strange for a few days and then most children forget they are there. For deep cases, braces give the precise three-dimensional control that this combination of movements requires.
At What Age Do You Fix an Overbite?
An overbite is evaluated by age 7 and corrected at the age that suits its cause, with most active treatment happening between ages 9 and 14. Age matters more for overbite correction than for almost any other orthodontic problem, because a growing jaw can be guided while a finished one can only have its teeth moved. The American Association of Orthodontists recommends a first evaluation no later than age 7 for exactly this reason.
The result a family should expect looks genuinely different at different ages, and this is where most online comparisons mislead. A seven year old’s finished treatment and a fifteen year old’s finished treatment are not the same kind of picture.
What Results Look Like for Kids Ages 7 to 10
Results for kids ages 7 to 10 look like a widened upper arch with room for adult teeth rather than a finished straight smile. Early treatment corrects the structure underneath, and the visible payoff arrives years later as the permanent teeth erupt into the space that was created for them. Parents expecting a transformation photograph at this stage are measuring against the wrong outcome.
Here is what typically happens in sequence at this age:
- Evaluation and measurement. We grade the overlap, identify whether the cause is dental or skeletal, and image the permanent teeth still developing in the bone.
- Structural correction. A narrow upper jaw is widened, a jaw relationship is guided, or a harmful habit is addressed, depending on what the measurement showed.
- A resting period. Active treatment pauses while the remaining permanent teeth erupt naturally into the corrected framework.
- Monitoring. We track eruption at regular intervals and note whether a second phase will be needed at all.
- Final alignment if required. Once most permanent teeth have arrived, a shorter course of braces or aligners finishes the detail work.
A palatal expander is the most common appliance at this age when the upper jaw is narrow, since the growth seam in the palate separates readily in a young child and resists later.
The strongest argument for treating early in the right cases is measurable. Cochrane researchers found that early two-phase treatment cut the odds of new front tooth injury roughly in half compared with waiting until adolescence, with trauma risk reduced by 33 percent using functional appliances and 41 percent using headgear. Phase 1 treatment exists for children whose overbite carries that kind of risk.
What Results Look Like for Teens Ages 11 to 18
Results for teens ages 11 to 18 look like a fully aligned smile with the bite closed to a normal overlap. By this age most permanent teeth have erupted, so the whole arch can be moved as a unit and the after is the finished picture people expect from a before and after. The lower teeth become visible again when the teen talks and laughs.
Published pediatric cases give a realistic sense of scale. Documented overbite corrections in children aged 11 to 14 treated with braces ran 18 to 22 months, which is the range most families here in Yorktown Heights should plan around for a straightforward case. Braces for kids and teens remain the most common approach because they handle vertical correction with the most control.
Teens with mild to moderate dental overbites have a second option. Clear aligners correct these cases well when worn consistently, though a deep or jaw-based overbite still responds better to fixed appliances. Compliance rather than technology is usually what decides between them.
How Long Does It Take to Fix an Overbite in a Child?
Fixing an overbite in a child takes 12 to 24 months in most cases, with the timeline set by cause more than by severity. A dental overbite in a teen typically resolves within a 12 to 18 month course, while a skeletal case in a growing child may involve a first phase of 9 to 12 months followed by 18 to 24 months of comprehensive treatment. Two-phase treatment feels longer and frequently makes the second phase shorter.
Three things move a case within those ranges. The amount of correction required sets the baseline, consistent elastic wear determines whether the bite closes on schedule, and kept appointments keep each adjustment building on the last. Missed visits stretch a timeline more reliably than any clinical factor.
Progress does not distribute evenly across the months. Crowding and rotations resolve early because those movements are the easiest, while the vertical correction that actually reduces the overlap continues through the end of braces treatment. A smile can look straight long before the bite is finished.
We track that gap between appearance and completion at every progress visit in our Yorktown Heights office. Parents often ask whether treatment can stop early once the front teeth look good, and the answer is almost always no, because the overlap is usually the last thing to finish.
What Does an Overbite Look Like Mid-Treatment?
Mid-treatment, an overbite often looks temporarily worse before it looks better. Bite turbos hold the back teeth apart on purpose, teeth move through intermediate positions that are not their final ones, and the bite can seem less settled than it did at the start. This stage is planned rather than accidental.
Knowing that in advance saves a lot of worry. Teeth have to pass through awkward positions to reach good ones, and a bite caught halfway through that journey photographs badly. Families who understand the sequence before it starts tend to describe the middle months as uneventful, and we walk through what to expect at the first visit so nothing comes as a surprise.
Will My Child’s Face Change If We Fix the Overbite?
Your child’s face changes modestly after overbite correction, and more noticeably when the treatment guided jaw growth. Correcting a dental overbite mainly changes the smile and how the lips rest, while correcting a skeletal overbite during growth can visibly improve the profile because the jaw relationship itself has shifted. Subtle improvement is the honest expectation.
Lip posture accounts for most of what people notice. Protruding upper front teeth push the upper lip forward and can make closing the lips at rest take effort, so moving those teeth back lets the lips rest naturally. A deep overlap can slightly shorten the lower third of the face, and opening the bite restores a small amount of that height.
Jawline claims deserve caution, particularly the ones circulating on social media. Orthodontic treatment moves teeth and, in growing children, influences how the jaw develops. It does not sculpt bone in a face that has finished growing. Many dramatic comparisons online show teenagers whose faces were changing throughout adolescence regardless of treatment. Where a genuine profile change does occur, it almost always comes from early orthodontic care delivered while growth was still available.
Do Overbites Get Worse With Age?
Yes, overbites get worse with age when they are left untreated. A deep bite tends to deepen over time as the lower front teeth keep erupting into the available space, the upper front edges wear down, and the surrounding teeth drift. Bites do not correct themselves, and the forces that created the overlap keep working.
The damage follows a predictable order. Lower incisal edges strike the tissue behind the upper front teeth, that tissue inflames and recedes under repeated contact, and recession exposes root surface that wears faster than enamel. Meanwhile the upper front edges flatten and chip under the same contact.
Grinding accelerates all of it. A child who grinds at night is adding vertical load to teeth already meeting incorrectly, and worn edges alongside morning jaw soreness often point to teeth grinding happening together with the bite problem. We screen for both at the same appointment, because treating one while ignoring the other rarely holds.
Will the Result Last?
The result lasts if a retainer is worn as directed after treatment finishes. Deep bites are among the corrections most likely to drift back, because the muscle patterns and eruption tendencies that produced the overlap are still present once the teeth have moved. Retention is the part that before-and-after photos never show.
The correction itself is structural, since bone rebuilds around each tooth in its new position. What remains is a lifelong tendency for teeth to migrate, and vertical corrections rebound more readily than horizontal ones. That is why retainer instructions after deep bite treatment are usually stricter than after simple alignment.
Several things keep a corrected bite stable:
- Wearing the retainer on the prescribed schedule, typically full time at first and then nightly on an ongoing basis
- Replacing a cracked or warped retainer promptly rather than going without while waiting
- Keeping regular checkups so small drift is caught while it is still small
- Addressing grinding, which loads exactly the teeth that were moved
- Finishing treatment properly rather than stopping once the smile looks straight
Most of this monitoring happens alongside routine checkups, which means families are not adding trips to the calendar to protect a result they already paid for in time and effort.
Frequently Asked Questions
Can I Get Braces Just for an Overbite?
Yes, braces can be used just for an overbite, though in practice the bite correction usually happens alongside general alignment. Every tooth moves through its own planned sequence, so correcting the overlap and straightening the arch typically occur together rather than as separate treatments. A case with a deep bite and otherwise straight teeth is treated with the same appliances aimed at the vertical problem specifically.
Can an Overbite Be Fixed Without Braces?
Yes, an overbite can be fixed without braces in some cases. Clear aligners correct mild to moderate dental overbites, palatal expanders address the narrow jaw that often accompanies one, and functional appliances guide jaw position in growing children. Severe overlaps and complex vertical corrections still respond best to braces because fixed appliances offer the most control.
Do Power Chains Fix an Overbite?
Power chains do not fix an overbite on their own. A power chain is a connected string of elastic rings stretched across brackets to close spaces between teeth, which is horizontal movement rather than the vertical correction a deep bite needs. Overbite correction relies on archwire shape, bite turbos, and elastics running between the upper and lower arches.
Can Jaw Exercises Fix an Overbite?
No, jaw exercises cannot fix an overbite. Moving teeth and jaws requires steady, controlled force applied over months, and no exercise, tongue posture technique, or chewing method produces that force. Attempting to move teeth without supervision risks damage to the roots, gums, and jaw joint, so the useful first step is always a measurement from a professional.
What Happens If a Child Has an Overbite and an Open Bite Together?
A child with an overbite and an open bite together usually has different regions of the mouth affected by each, since the two conditions are opposites at the front. More often the combination is a deep overlap at the front with an open bite toward the sides, or an open bite caused by a habit sitting alongside a developing deep bite. Treatment addresses the cause first, which is frequently a thumb or pacifier habit or a tongue posture pattern.
Is an Overbite Genetic?
Yes, an overbite is largely genetic, since jaw size, jaw position, and tooth size are inherited. Childhood habits can deepen an overlap that genetics started, particularly thumb or pacifier sucking that continues past the normal stopping point. Losing a baby tooth years ahead of schedule can also contribute, which is why we treat early tooth loss as an orthodontic event rather than a minor one.
The Bottom Line
An overbite before and after shows a deep overlap reduced to a healthy 2 to 4 millimeters, with the lower teeth visible again and the front teeth meeting evenly instead of wearing against each other. Four of the five things that change do not photograph at all: the profile when the bite closes, chewing and speech, the wear pattern on the enamel, and the injury risk to exposed front teeth. Those are the reasons treatment is recommended, and they are worth more than the picture.
What a result looks like depends on when treatment happens. A seven year old’s finished early treatment is a widened arch with room for adult teeth, not a transformation photo. A teenager’s is the fully aligned smile most people picture. Both are correct results for their stage, which is why comparing your child against someone else’s photo online tells you almost nothing about what to expect. We see families across Yorktown Heights arrive with exactly that comparison in hand, and the first useful step is always measuring your own child’s bite. If you would like a straight answer about what is realistic for your child, we would be glad to take a look at Cohen Family Smiles, and you can contact us whenever it suits you.
