What Is an Overbite?
An overbite refers to how far the upper front teeth extend horizontally and vertically beyond the lower front teeth. In orthodontics, it’s typically measured as a percentage or in millimeters. A small overbite — usually between 1 and 3 millimeters — is actually normal and healthy. The upper teeth are supposed to overlap the lower teeth slightly.
The problem starts when that overlap becomes too large. When the upper front teeth cover too much of the lower front teeth, it’s considered an excessive overbite. This is one of the most common bite issues orthodontists treat. Left uncorrected, a significant overbite can lead to uneven wear on the teeth, jaw discomfort, and even gum tissue irritation where the lower teeth bite into the roof of the mouth.
What Is a Deep Bite?
A deep bite — sometimes called a deep overbite — is a specific type of overbite where the vertical overlap is particularly severe. In a deep bite, the upper front teeth cover 50% or more of the lower front teeth when the mouth is closed. In some cases, the lower teeth may not be visible at all, or they may bite into the gum tissue behind the upper teeth.
So while all deep bites are technically overbites, not all overbites are deep bites. Think of it this way: overbite is the general category, and deep bite is the more severe form within that category. A deep bite often requires more focused treatment because the vertical dimension of the bite needs to be carefully corrected, not just the alignment of individual teeth.
How Are They Different — and Why Does It Matter?
The key difference comes down to severity and treatment complexity. A moderate overbite might be corrected with standard braces or Invisalign without much additional work. A deep bite, on the other hand, often requires specific mechanics to open the bite vertically — such as bite turbos, special Invisalign attachments, or auxiliary appliances used alongside braces.
Here’s a quick side-by-side to make it clearer:
- Overbite: Upper front teeth overlap lower front teeth more than normal; ranges from mild to severe
- Deep bite: A severe vertical overlap where upper teeth cover 50% or more of the lower teeth; often requires specialized bite correction mechanics
- Both: Can affect jaw function, tooth wear, and aesthetics; both are treatable with orthodontic care
It’s also worth noting that some patients have both a deep bite and other bite issues, such as an overjet (where the upper teeth protrude forward) or crowding. Your orthodontist will evaluate the full picture before recommending a treatment plan.
Types of Overbite: Skeletal vs. Dental
Another important distinction with overbites — including deep bites — is whether the cause is dental or skeletal.
- Dental overbite: The teeth themselves are positioned in a way that creates the excessive overlap. This is often the more straightforward type to treat with orthodontics alone.
- Skeletal overbite: The jaw bones themselves contribute to the bite problem — for example, the lower jaw may be positioned further back than it should be. Skeletal overbites can sometimes require more complex treatment, especially in adults.
In growing children and teens, skeletal deep bites can sometimes be addressed with growth modification appliances in addition to braces or Invisalign. In adults, the treatment approach depends on the severity. That’s why it’s important to have an orthodontist — not just a general dentist — evaluate your bite. An orthodontist has specialized training in identifying and treating these differences.
Deep Overbite Treatment: What Are the Options?
The good news is that both overbites and deep bites are very treatable. The right option depends on your age, severity, and whether the issue is dental, skeletal, or a combination.
- Braces: Traditional braces are often effective for correcting deep bites, especially in younger patients. Orthodontists can use bite-opening mechanics alongside braces to address vertical overlap. You can also browse braces before and after photos to see real patient results.
- Invisalign: Deep bite Invisalign treatment has improved significantly in recent years. Invisalign uses precision attachments and bite ramps to help open the bite. Many deep bite cases are now treatable with clear aligners. You can schedule a free Invisalign consultation to find out if you’re a candidate.
- Early treatment: For children, addressing a deep bite early — often around ages 7 to 10 — can make correction easier and may reduce the need for more extensive treatment later.
- Retainers: After active treatment, wearing a retainer consistently is essential to keep the corrected bite in place long-term.
If you’re in the Alexandria area and wondering which option is right for you or your child, an evaluation at our Alexandria, VA orthodontic office can give you a clear answer based on your specific bite.
When Should You See an Orthodontist?
If elastics are part of your treatment plan, our guide on how jaw elastics work explains the process. For a broader look at timelines, see how long bite correction takes with braces, and learn whether braces can change your facial appearance as your bite improves. For the complete picture of bite issues we treat, see our bite problems guide, or explore our full orthodontic treatment services. If you’re near Fairfax County, visit our Fairfax County orthodontist page for more local information.
You don’t need to wait until a bite issue causes obvious problems to seek an evaluation. The American Association of Orthodontists recommends that children have their first orthodontic screening by age 7. For adults, there’s no age cutoff — bite issues can be corrected at any stage of life, though treatment timelines and options may vary.
Signs that a deep bite or overbite may need attention include:
- Upper front teeth that significantly cover the lower teeth
- Lower teeth that are barely visible when the mouth is closed
- Jaw pain, clicking, or discomfort when chewing
- Unusual wear patterns on the teeth
- Gum sensitivity near the lower front teeth
If any of these sound familiar, it’s worth getting a professional evaluation sooner rather than later.
Frequently Asked Questions
Is a deep bite the same as an overbite?
Not exactly. An overbite is when the upper front teeth overlap the lower front teeth more than normal. A deep bite is a more severe version of this, where the upper teeth cover 50% or more of the lower teeth. All deep bites are overbites, but not all overbites are considered “deep.”
Can Invisalign fix a deep bite?
Yes, in many cases. Invisalign has specific features — including precision attachments and built-in bite ramps — that help correct deep bites. The best way to find out if Invisalign is right for your situation is to schedule a free Invisalign consultation at ABSC.
Does a deep bite need to be treated right away?
It depends on the severity. Mild cases may not cause immediate problems, but a significant deep bite can lead to tooth wear, gum irritation, and jaw issues over time. An orthodontist can help you understand whether your situation needs treatment now or can be monitored.
How do I know if my child has a deep bite?
A good starting sign is if the upper front teeth appear to cover most or all of the lower front teeth when your child bites down. An orthodontic exam is the only way to confirm it. Children in the Alexandria, VA area can be seen at our Franconia Road office for an early evaluation.
How long does deep overbite treatment take?
Treatment length varies depending on the severity of the bite issue, the patient’s age, and the treatment method used. Many cases are resolved within 12 to 24 months. A full timeline estimate is part of what you’ll receive during your initial consultation. You can also read more about factors that affect orthodontic treatment timelines.
Ready to Get Your Bite Evaluated in Alexandria?
If you’ve been wondering whether a deep bite or overbite is affecting you or your child, the most helpful next step is a professional evaluation. At American Braces & Smile Center in Alexandria, VA, our orthodontic team can assess your bite, explain your options clearly, and help you decide on the right path forward — whether that’s braces, Invisalign, or early intervention for a younger patient. There’s no pressure and no guesswork. Contact us today to schedule your consultation.
