Deep Bite (When the Top Teeth Cover Too Much of the Bottom Teeth)
What Is a Deep Bite?
Have you ever noticed that your child's bottom teeth seem to disappear when they bite together?
If so, they may have a deep bite, sometimes called a deep overbite.
A deep bite occurs when the upper front teeth cover too much of the lower front teeth when the mouth is closed.
A small amount of overlap is completely normal. In fact, healthy bites should have some overlap between the upper and lower front teeth.
When the overlap becomes excessive, the lower teeth may be difficult to see when smiling or biting together. In more severe cases, the lower front teeth may press into the tissue behind the upper front teeth or even contact the roof of the mouth.
Deep bites are one of the most common orthodontic concerns we see in children, teens, and adults.
Why Does a Deep Bite Happen?
Most deep bites develop because of the way the teeth and jaws grow.
Common causes include:
Genetics
Differences in jaw growth
Strong biting muscles
Front teeth that erupt more than expected
Back teeth that erupt less than expected
Tooth wear
Missing teeth
The good news is that a deep bite is usually nobody's fault. Most children inherit their bite pattern, just like they inherit eye color or hair color.
How Does a Deep Bite Change Over Time?
Deep Bite in Baby Teeth
Deep bites are very common in young children.
In fact, many children naturally have a deeper bite while their baby teeth are present.
For most children, this is simply something we monitor as they grow.
Deep Bite During the Transition to Adult Teeth
As permanent teeth begin coming in, the bite continues to change.
Many deep bites improve naturally during this stage as the back teeth erupt and the face continues to develop.
This is one reason we are often cautious about recommending treatment too early when the bite is not causing any problems.
Deep Bite in Permanent Teeth
Once most of the permanent teeth have erupted, we can better determine whether the deep bite is likely to cause long-term concerns.
Some patients may experience:
Excessive wear on front teeth
Chipping
Gum recession
Bite problems
Smile concerns
This is often when treatment becomes most beneficial.
Deep Bite in Adults
Adults with untreated deep bites may experience years of excessive pressure on their front teeth.
Over time, this can contribute to:
Tooth wear
Chipped teeth
Cracked teeth
Gum recession
Bite discomfort
The good news is that deep bites can still be corrected successfully in adulthood.
Will My Child Outgrow a Deep Bite?
Sometimes.
Unlike some orthodontic problems that rarely improve on their own, many mild deep bites become less severe as children grow and their permanent teeth erupt.
This is one reason we don't rush every child with a deep bite into treatment.
The challenge is determining which deep bites are likely to improve naturally and which may cause problems later.
That's where regular orthodontic evaluations become valuable.
Does a Deep Bite Need to Be Fixed?
Not always.
Many deep bites can be safely monitored for years without causing any permanent problems.
However, treatment may be recommended when a deep bite is causing:
Excessive tooth wear
Chipping
Gum recession
Bite problems
Soft tissue injury
Concerns about appearance
At Smile Squad, one of the most important questions Dr. Martinez asks is:
"If we don't fix this now, is there an unreasonable risk of permanent damage?"
If the answer is no, treatment can often wait.
If the answer is yes, earlier treatment may be appropriate.
Does Every Deep Bite Need Phase I Treatment?
Not necessarily.
One of the most important parts of orthodontics is determining not only how to treat a problem, but also when to treat it.
Some children with deep bites benefit from treatment during the mixed dentition years, while others can be safely monitored until adolescence. The right timing depends on the severity of the bite, the child's stage of development, and whether the bite is causing any damage.
At Smile Squad, one of the questions Dr. Martinez asks when evaluating a deep bite is:
"If we don't fix this now, is there an unreasonable risk of permanent damage?"
For most deep bites, the answer is no.
Many deep bites can be safely observed until adolescence without causing lasting harm.
The most common exception is when the lower front teeth are damaging the soft tissue behind the upper front teeth or pressing into the roof of the mouth. In those situations, earlier treatment may be recommended to prevent ongoing injury.
For many children, however, careful monitoring is often the best approach.
Sometimes the best treatment is not treatment today. Sometimes the best treatment is having a plan and waiting for the right time.
When Is the Best Time to Fix a Deep Bite?
One of the most common questions parents ask is:
"Should we fix it now, or should we wait?"
For many patients, deep bite correction is most predictable during adolescence after most of the permanent teeth have erupted.
Why?
Because adolescents are still growing.
As the face continues to develop and the back teeth continue erupting, orthodontists can often use that growth and eruption to help open the bite and create a more stable result.
This doesn't mean younger children never benefit from treatment. Some deep bites are severe enough to justify earlier intervention, particularly when soft tissue injury is present.
For many children, however, observation and regular orthodontic monitoring are all that is needed during the mixed dentition years.
At Smile Squad, we focus on identifying the right timing for each child rather than applying the same approach to everyone.
Our goal is not to treat as early as possible. Our goal is to treat at the right time.
How Is a Deep Bite Fixed?
Treatment depends on the patient's age, growth, and severity of the bite.
Observation
Many children simply need periodic monitoring while their permanent teeth continue to erupt.
In fact, observation is often the best recommendation for children whose deep bite is not causing damage or functional concerns.
Early Treatment for Soft Tissue Trauma
If the lower teeth are causing injury to the tissue behind the upper front teeth or the roof of the mouth, earlier treatment may be recommended.
The goal is to eliminate the traumatic bite and protect the surrounding tissues.
Anterior Bite Plate
An anterior bite plate is one of the most common appliances used to correct deep bites in growing patients.
This removable appliance fits behind the upper front teeth and temporarily prevents the back teeth from fully touching together. Over time, this allows the back teeth to erupt and helps open the bite.
Anterior bite plates can be a simple and effective option for selected children when early treatment is appropriate.
Braces
Braces remain one of the most effective tools for correcting deep bites.
They give orthodontists excellent control over tooth movement and bite correction, making them especially useful for moderate and severe deep bites.
Clear Aligners
Clear aligners can be an excellent option for many orthodontic problems, but deep bite correction is one area where they may have limitations.
Because aligners cover the chewing surfaces of the teeth, they naturally create a small amount of separation between the upper and lower teeth. In some patients, prolonged aligner wear can contribute to posterior open bites, where the back teeth do not fit together as well as expected. This can place additional biting forces on the front teeth and make deep bite correction more challenging.
Many mild deep bites can be treated successfully with aligners. However, for more significant deep bites, braces and other orthodontic techniques often provide greater control and more predictable results.
At Smile Squad, we choose the appliance based on the problem we are trying to solve, not simply on what is most popular.
Bite Turbos
Small bite-opening attachments called bite turbos are sometimes used to temporarily separate the teeth and help the bite develop into a healthier position.
Growth-Assisted Correction
One advantage of treating deep bites during adolescence is that growth is still occurring.
As the face develops and the back teeth continue erupting, orthodontists can often use natural growth and eruption to help create a more stable correction.
This is one reason deep bite correction is often more predictable during adolescence than it is later in adulthood.
Adult Deep Bite Treatment
Deep bites can absolutely be corrected in adults.
However, treatment is often more challenging because growth has already finished.
When treating growing teenagers, orthodontists can often use natural growth and tooth eruption to help open the bite. Adults no longer have that advantage.
As a result, some of the tooth movements needed to correct a deep bite can be more difficult to achieve and may be less stable over time than corrections made during adolescence.
The good news is that adults can still achieve excellent results. Treatment simply requires a different approach and careful planning to create a healthy, stable bite.
Signs Parents Should Watch For
You may want to schedule an orthodontic evaluation if you notice:
Bottom teeth that disappear when biting
Upper teeth covering most of the lower teeth
Excessive wear on front teeth
Chipped front teeth
Lower teeth contacting the roof of the mouth
Gum recession around front teeth
Complaints of irritation behind the upper front teeth
Concerns about the appearance of the smile
Why Early Diagnosis Matters
Early diagnosis does not necessarily mean early treatment.
In fact, many deep bites are best managed through careful observation until adolescence.
The purpose of an early evaluation is to determine whether the bite is causing damage and whether treatment should begin now or later.
By monitoring growth and development, we can identify the small number of patients who may benefit from earlier intervention while allowing others to avoid unnecessary treatment.
The goal is not to treat every child early. The goal is to provide the right treatment at the right time.
Why Families Trust Smile Squad
Deep bite correction is not just about straightening teeth. It requires understanding growth, facial development, bite mechanics, and long-term stability.
Dr. Martinez has spent more than a decade treating thousands of orthodontic patients and helping families understand when treatment is truly necessary and when observation may be the better choice.
In addition to private practice, Dr. Martinez serves as faculty at UNLV, where he teaches orthodontic biomechanics, ABO literature review, esthetics in orthodontics, and Phase I diagnosis and treatment planning. He also developed the Phase I curriculum used within the UNLV orthodontic residency program.
At Smile Squad, our orthodontic and pediatric dental specialists work together to monitor growth, identify concerns early, and create individualized treatment plans based on each patient's unique needs.
Our goal is simple: provide the right treatment at the right time.
Frequently Asked Questions About Deep Bite
What is a deep bite?
A deep bite occurs when the upper front teeth cover too much of the lower front teeth when biting together.
Is a deep bite the same as an overjet?
No. A deep bite describes vertical overlap, while overjet describes how far forward the upper teeth sit relative to the lower teeth.
Will my child outgrow a deep bite?
Some mild deep bites improve naturally as children grow and their permanent teeth erupt.
Does every deep bite need treatment?
No. Many deep bites can be safely monitored for years without causing problems.
Does every deep bite need Phase I treatment?
No. Most deep bites can be safely observed until adolescence. Early treatment is usually reserved for situations where the bite is causing damage to the teeth or soft tissues.
What is an anterior bite plate?
An anterior bite plate is a removable appliance that helps open a deep bite by allowing the back teeth to erupt while preventing the front teeth from excessively overlapping.
Can a deep bite damage teeth?
Yes. Severe deep bites can contribute to tooth wear, chipping, gum recession, and bite problems.
Can clear aligners fix a deep bite?
Many mild deep bites can be treated successfully with aligners. However, more significant deep bites are often treated more predictably with braces and other orthodontic techniques.
Why is deep bite correction easier during adolescence?
Because growth and tooth eruption are still occurring, orthodontists can often use those natural processes to help create a more stable correction.
Concerned About a Deep Bite?
If you've noticed that your child's upper teeth cover most of their lower teeth, or if the lower teeth are contacting the roof of the mouth, an orthodontic evaluation can help determine whether treatment is needed.
Dr. Martinez and the Smile Squad team have extensive experience evaluating and treating deep bites in children, teens, and adults. Together, we'll determine whether observation or treatment is the best option and develop a plan that protects your child's smile for years to come.