Overjet vs Overbite | What’s the Difference?

Ever looked at your smile in the mirror and wondered, Are my top teeth sticking out too much? Or maybe someone mentioned you have an overbite, and now you’re confused. Is that the same thing as overjet? Not exactly.

Many people who come in for braces treatment think these two terms mean the same thing. They don’t. While both relate to how your upper and lower teeth fit together, they describe different types of bite issues.

Let’s break it down in a simple, clear way.

What Is Overjet?

Overjet is about how far your top front teeth stick out horizontally over your bottom teeth.

If you look at your smile from the side and your upper teeth noticeably project forward, that’s likely overjet. Some people call it “buck teeth,” though that term isn’t very kind.

Common signs of overjet:

• Upper teeth stick out noticeably

• Lips may not close comfortably

• Higher risk of front teeth chipping

• Jaw strain in some cases
  

Mild overjet is very common and often harmless. But when it’s more severe, it can affect both appearance and function.

What Is Overbite?

Overbite is different. It’s about vertical overlap. When you bite down, your upper front teeth naturally cover a small part of your lower front teeth. That’s normal. But if they cover too much, that’s called a deep overbite.

Signs of overbite:

• Upper teeth cover most or all of the lower teeth

• Lower teeth may hit the roof of your mouth

• Jaw discomfort or wear on teeth

• Shorter looking lower face in some cases
  

Again, some overlap is normal. It becomes a problem when it causes wear, pain, or functional issues.

Quick Comparison: Overjet vs Overbite

Feature	Overjet	Overbite
Direction of issue	Horizontal	Vertical
Teeth position	Top teeth stick forward	The top teeth cover the bottom teeth too much
Visible from the side?	Yes, very noticeable	Not always obvious from the side
Risk factors	Tooth injury, speech issues	Tooth wear, jaw discomfort
Treatment options	Braces, Invisalign, appliances	Braces, Invisalign, bite correction techniques

This simple difference — horizontal vs vertical — is the key.

What Causes Overjet and Overbite?

There isn’t just one reason. It can be:

• Genetics

• Thumb sucking as a child

• Tongue thrusting habits

• Jaw growth imbalance

• Early or late loss of baby teeth
  

Sometimes it’s mainly a teeth alignment issue. Other times it’s a jaw positioning issue. That’s why proper diagnosis matters.

Can Braces Fix Overjet and Overbite?

In most cases, yes.

Modern braces treatment is very effective for correcting both overjet and overbite. Braces slowly move teeth into better positions and improve how the upper and lower arches fit together.

For overjet, braces can:

• Pull your upper teeth back

• Move the lower teeth forward if needed

• Improve lip support and profile
  

For overbite, braces can:

• Intrude certain teeth

• Adjust vertical overlap

• Improve bite balance

The exact plan depends on whether the issue is dental or skeletal.

Can Invisalign Correct Overjet and Overbite?

This is one of the most common questions. Yes, invisalign can treat many mild to moderate cases of overjet and overbite. With attachments and proper planning, clear aligners can move teeth in both horizontal and vertical directions.

However, severe cases may still require traditional braces or even jaw surgery. It depends on:

• The severity

• Jaw relationship

• Patient age

• Growth pattern
  

Aligners are popular because they’re discreet and removable. But they still require commitment. Wearing them 20 to 22 hours daily is key.

What About the Damon System?

The Damon System is another orthodontic option people often ask about. It uses self-ligating brackets that don’t need elastic ties. This can:

• Reduce friction

• Allow smoother tooth movement

• Potentially shorten chair time
  

Some patients prefer it because it feels cleaner and may require fewer adjustments. It can be effective for treating both overjet and overbite, depending on the case.

The important thing to remember is this: no system is magic. The skill and planning behind the treatment matter more than the brand name.

Do You Always Need Surgery?

Not usually.

Most overjet and overbite cases can be corrected with orthodontic treatment alone. Surgery is typically considered only when there is a significant jaw discrepancy.

For example:

• A very large overjet caused by jaw position

• Severe skeletal deep bite

• Functional problems like difficulty chewing

An orthodontist will evaluate facial balance, X-rays, and bite function before suggesting surgery.

Why You Shouldn’t Ignore It

You might think, “It’s just cosmetic.” But sometimes it’s more than that.

Untreated overjet can increase the risk of:

• Tooth fractures

• Speech concerns

• Lip incompetence
  

An untreated overbite can cause:

• Enamel wear

• Gum issues

• Jaw discomfort

Fixing these issues early can protect your teeth long term.

How Long Does Treatment Take?

Every case is different, but on average:

• Mild cases: 12 to 18 months

• Moderate cases: 18 to 24 months

• Complex cases: longer
  

Consistency, hygiene, and following instructions play a big role in results.

Final Thoughts

Overjet and overbite might sound similar, but they describe two different bite problems. One is about horizontal projection. The other is about vertical overlap.

The good news? Both are very treatable with modern orthodontics.

If you’re unsure which one you have, a proper evaluation is the first step. At Masri Orthodontics, patients are guided through clear explanations, digital scans, and personalized treatment planning so they fully understand their options before starting.

The best treatment plan isn’t about trends. It’s about what fits your bite, your goals, and your lifestyle.

Frequently Asked Questions

1. Is overjet worse than overbite?

Not necessarily. Severity matters more than the type. Both can cause issues if left untreated.

2. Can overjet get worse with age?

Yes. Teeth can shift over time, especially without retainers.

3. Is Invisalign as effective as braces?

For mild to moderate cases, yes. Severe skeletal cases may need braces or additional treatment.

4. Does fixing an overbite change face shape?

In some cases, yes. Correcting a deep bite can improve facial balance and jaw appearance.

5. How do I know which treatment is right for me?

A full orthodontic evaluation, including photos, X-rays, and bite analysis, is the best way to decide.