Dental & oral health

How Dentists Correct an Overbite

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Every overbite looks similar in the mirror — the upper teeth sit too far over the lower ones — but the cause behind that overlap varies enough that treatment ranges from a simple set of braces to a surgical jaw correction. This walks through how dentists tell those causes apart, why an early evaluation changes the timeline, and what correction actually involves at each stage.

Last updated: July 2026

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Overbite vs. Overjet: Getting the Terms Right

An overbite refers specifically to vertical overlap — how far the upper front teeth cover the lower front teeth when the mouth is closed — and everyone has some overbite; a small amount is normal. A 'deep bite' is the term for an overbite so pronounced the lower teeth barely show, or even bite into the roof of the mouth or the gum behind the upper teeth. That is different from overjet, which measures how far the upper teeth stick out horizontally past the lower teeth; the two often occur together but are measured and sometimes treated differently, which is why understanding the difference between overbite and overjet matters before assuming a single fix applies.

A true deep bite is usually what people mean when they ask how to fix an overbite, since a mild, normal amount of overlap needs no treatment at all.

Why an Evaluation Around Age 7 Matters

The American Association of Orthodontists recommends that every child have an orthodontic check-up by age 7, once enough permanent teeth have come in for a dentist to judge how the jaw and bite are developing 1. Most children seen at that age are told to keep coming back for monitoring rather than starting treatment immediately, but a developing deep bite is one of the patterns an early evaluation is specifically designed to catch, because a child's jaw still has growth left to guide.

Catching a skeletal deep bite early does not guarantee a shorter or simpler course of treatment for every child, but it opens options — growth-guiding appliances among them — that are no longer available once the jaw has finished growing 2.

How Braces or Clear Aligners Correct Tooth-Position Overbites

When the excess overlap comes mainly from how the teeth are positioned rather than a true jaw-size mismatch, braces or clear aligners can correct it by leveling the bite: bringing the lower teeth up and the upper front teeth down and back into a normal relationship. This is the most common overbite correction path for teenagers and adults, and it is frequently combined with crossbite correction or the straightening of crowded teeth in the same course of treatment when a patient has more than one bite issue at once. A patient learning how to fix an underbite often discovers the same appliance can correct a mild deep bite at the same time, since a single treatment plan can address more than one type of malocclusion.

Treatment length for a tooth-position overbite varies widely — a mild case might take under a year, while a more complex one with crowding or spacing involved can run close to two years — and the orthodontist's initial workup, not the patient's own sense of severity, determines which range applies.

Growth-Guiding Appliances for a Child's Developing Jaw

When a deep bite in a child comes from the lower jaw growing behind where it should relative to the upper jaw, an orthodontist may use a removable or fixed growth-guiding appliance — a broad category that includes devices designed to encourage the lower jaw to catch up, or to hold the upper jaw's growth back, while the child still has active growth to work with. These appliances rely entirely on a growing skeleton; they do nothing for an adult whose jaw growth is complete.

A child treated this way typically moves into a second phase of braces once all the permanent teeth are in, to fine-tune tooth position after the underlying jaw relationship has been corrected. The two phases together are usually what a family means when they describe a child's overbite treatment as having taken several years.

When a Severe Overbite Needs Jaw Surgery

A genuinely severe skeletal deep bite — one where the lower jaw is significantly smaller than the upper jaw, or set too far back — sometimes cannot be fully corrected by moving teeth alone, especially once a patient's jaw growth is finished. In those cases, orthognathic jaw surgery repositions the jawbone itself, typically bracketed by a period of braces beforehand to align the teeth for surgery and afterward to fine-tune the bite once the jaw has healed.

This combination — braces plus surgery — is reserved for a minority of overbite cases and is decided only after imaging shows the mismatch is truly skeletal rather than a tooth-position problem that braces alone could resolve.

Why an In-Person Diagnosis Matters for This Specific Bite Problem

A direct-to-consumer aligner kit is not built to tell a mild, cosmetic tooth-position issue apart from a genuine deep bite, because it typically screens with a home impression kit rather than an in-person exam and imaging. An analysis of the FDA's MAUDE adverse-event database found reports of harm tied specifically to direct-to-consumer sequential aligners, including tooth mobility, open bite, gum recession, and pain 3 — the kind of outcome more likely when a bite problem more complex than simple crowding is treated with an appliance not designed to evaluate it first.

A deep bite treated without that distinction being made first carries a specific risk: aligners marketed for cosmetic straightening are generally not built to correct significant vertical overlap, and pushing ahead with one on a true deep bite can leave the underlying bite relationship unresolved even after the visible crowding looks better.

What an Untreated Deep Bite Can Lead To

A deep bite that goes uncorrected does not usually cause a crisis, but over years it tends to concentrate wear on a smaller number of teeth than a normal bite would, since the lower front teeth may be striking the upper teeth or the gum tissue behind them on every bite rather than meeting evenly across the arch. Some people with a longstanding deep bite also develop irritation or small sores on the roof of the mouth or the gum behind the upper front teeth from repeated contact with the lower teeth.

A deep bite can also make the jaw joint work at an angle it was not built for over the long run, which is one reason jaw clicking or soreness sometimes shows up alongside a bite that has never been evaluated. None of this means every deep bite is urgent, but it is a reason a deep bite noticed at any age is worth raising at a routine dental visit rather than treating it as purely cosmetic.

Common questions

Overbite measures vertical overlap — how much the upper front teeth cover the lower ones. Overjet measures horizontal projection — how far the upper teeth stick out past the lower teeth. They often occur together, but a person can have one without much of the other, and the two are assessed separately during an exam.

A mild, normal amount of overlap needs no correction at all. A true deep bite, where the lower teeth are significantly covered or the bite is deep enough to reach the gum tissue, does not resolve on its own and needs an orthodontic evaluation to determine the right treatment.

Braces or clear aligners correct most overbites, including many moderate ones, by adjusting tooth position. Jaw surgery is reserved for a smaller number of cases where imaging shows the mismatch is genuinely skeletal — the jaw sizes themselves, not just tooth position — and that determination is made by a specialist, not guessed from how the bite looks.

A tooth-position overbite in an adult, treated with braces or aligners alone, commonly takes somewhere between several months and about two years depending on how much correction is needed and whether other bite issues are being addressed at the same time.

Everyone has some overbite, and a small, normal amount is not a problem. 'Deep bite' describes an overbite pronounced enough that the lower teeth are largely hidden, or bite into the tissue behind the upper teeth — that is the version people generally mean when asking about overbite correction.

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When an Overbite Needs Prompt Attention

  • —lower teeth biting into the roof of the mouth or the gum tissue behind the upper teeth, causing sores or pain
  • —a bite that changes suddenly rather than gradually, especially after facial trauma
  • —jaw pain, clicking, or difficulty opening the mouth fully alongside a known deep bite
  • —a tooth that becomes loose or visibly shifts during treatment

This article is educational and does not replace a clinical exam and treatment plan from a licensed dentist or orthodontist.

References

  1. 1.American Association of Orthodontists (2024). The Milestone Visit: Why Age 7 is The Best Age For Orthodontic Treatment. American Association of Orthodontists. linkThe AAO recommendation that children have an orthodontic check-up by age 7, used to frame when a developing deep bite is typically first identified.
  2. 2.American Association of Orthodontists (2024). What Are the Benefits of Early Orthodontic Treatment?. American Association of Orthodontists. link ✓The rationale and limits of interceptive early treatment, used to explain why catching a skeletal deep bite early opens growth-guiding options unavailable later.
  3. 3.Kunkel T, et al. (2023). Adverse Events Related to Direct-To-Consumer Sequential Aligners - A Study of the MAUDE Database. PubMed Central (peer-reviewed study). link ✓That regulator-reported adverse events (tooth mobility, open bite, gum recession, pain) exist for direct-to-consumer aligners, used to explain why an in-person diagnosis matters for distinguishing a tooth-position overbite from a skeletal one.

3 sources, numbered by first appearance. General health information, not medical advice. AI-assisted editorial content — citations link their sources. Editorial policy

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