Is overbite normal? Yes, having an overbite is normal! Most people have some overbite where their top teeth sit a little bit in front of their bottom teeth. A normal overbite is about 1-3 millimeters, which means your top teeth cover your bottom teeth just a tiny bit. This small overlap helps you chew food properly and keeps your teeth safe.
An overbite becomes a problem when it’s too big (more than 4-5 millimeters) or when it makes it hard to eat, talk, or causes pain in your jaw. If your top teeth cover your bottom teeth too much, it can hurt your gums or make your teeth wear down. If you have jaw pain or trouble chewing, you should visit an orthodontist in Calgary to see if you need help.
| What to Look For | Normal Overbite | Problem Overbite |
|---|---|---|
| How Much Overlap | 1-3 millimeters (very small) | 4+ millimeters (too much) |
| How It Looks | Top teeth slightly cover bottom teeth | Top teeth cover bottom teeth too much |
| How It Works | Easy to chew and talk | Hard to bite, chew, or talk clearly |
| How It Feels | No pain or problems | Jaw pain, headaches, sore gums |
| When to See a Doctor | Only for regular checkups | Should see an orthodontist |
| What Causes It | Normal jaw growth | Genetics, bite not properly aligned |
Table of Contents
What Is Overbite?
When it comes to how your teeth fit together, two terms that often get confused are overbite and overjet. An overbite refers to the vertical overlap of your front teeth — it’s how much the top teeth cover the bottom ones when you bite down. In a deep overbite, the upper teeth may completely hide the lower ones from view. An overjet, on the other hand, is about the horizontal position of your front teeth. If someone has a large overjet, their top teeth stick out noticeably further than their bottom teeth — this is often what people mean when they say “buck teeth.” Ideally, you want a small, healthy overlap in both directions for the best function and appearance.
To learn more about the difference, check out our guide on overjet vs overbite.
What is a Normal Overbite?
A normal overbite happens when your upper front teeth overlap your lower front teeth by about 2 to 3 millimeters. This is roughly 1/3 to 1/2 of the height of your lower teeth. This slight overbite helps your teeth work properly when you bite and chew food.
Think of it like this: your upper and lower teeth need to fit together like puzzle pieces. A small amount of overlap helps protect your teeth and makes eating easier. This is what dentists call a “normal bite.”
Your upper teeth naturally cover part of your lower teeth when your mouth is closed. This normal overbite:
- Protects your lower teeth from wearing down
- Helps you chew food properly
- Keeps your tongue in the right position
- Supports healthy jaw function
When Does an Overbite Become a Problem?
An overbite becomes problematic when your upper front teeth overlap your lower front teeth by more than 4 millimeters. This is called an “excessive overbite” or “deep bite.”
Here are the warning signs of a severe overbite:
- Your upper teeth cover most or all of your lower front teeth
- You can’t see your bottom teeth when you smile
- Your lower teeth touch the roof of your mouth
- You have trouble biting or chewing certain foods
- Your jaw feels tight or painful
Signs Your overbite is Abnormal and Needs Treatment
Not every overbite needs treatment. But you should see an orthodontist if you notice these signs:
Physical symptoms:
- Jaw pain or clicking sounds
- Trouble chewing certain foods
- Speech problems or lisping
- Teeth grinding at night
- Frequent headaches
- Tooth pain or sensitivity
Dental health issues:
- Excessive tooth wear on your front teeth
- Gum disease around your lower front teeth
- Frequent tooth decay
- Difficulty keeping your teeth clean
Appearance concerns:
- Your lower teeth aren’t visible when you smile
- Your face looks unbalanced
- You feel self-conscious about your teeth
- Your upper teeth protrude noticeably
If any of these sound familiar, it’s time to book a consultation with an orthodontist. Many common conditions can be treated with orthodontics, and overbites are one of the most successfully corrected problems.
When to See an Orthodontist
The Canadian Association of Orthodontists recommends that children have their first orthodontic screening by age 7. This allows orthodontists to spot potential problems early and guide proper jaw growth.
Remember, it’s never too late to improve your oral health and smile. Modern orthodontic treatments are more comfortable and effective than ever before.
If you’re concerned about your overbite or your child’s bite, don’t wait. Early treatment often produces the best results with the least amount of time and discomfort. At Impact Orthodontics in Calgary, we’re here to help you achieve a healthy, beautiful smile that lasts a lifetime.
Ready to learn more about your treatment options? Book a new patient exam today and take the first step toward better oral health.
