What Is an Overbite, Underbite, or Crossbite? And Why It Matters

When you think about getting braces, you probably picture straightening crooked teeth. But true orthodontic care is about much more than a straight smile.

The way your upper and lower teeth fit together is just as important as how they look. When your teeth do not close together properly, it can trigger a domino effect of dental and facial issues.

At Bronte Family Orthodontics, Dr. Manish Aggarwal frequently helps patients whose main issue isn't just crooked teeth, but a misaligned bite. 

Let's break down the most common bite problems and why correcting them is vital for your long-term health.

Understanding Common Bite Problems

A healthy bite means your upper teeth fit slightly over your lower teeth when your jaws are closed. When this complex system doesn't line up correctly, it is clinically known as a malocclusion.

Here are the three most common types of bite misalignment we see in our clinic:

The Overbite

An overbite occurs when your upper front teeth overlap significantly with your lower front teeth. While a very slight overlap is completely normal, a severe overbite, often called a "deep bite" is problematic.

In extreme cases, a deep bite can actually cause your lower teeth to bite directly into the sensitive roof of your mouth.

The Underbite

An underbite is exactly the opposite of an overbite. In this case, your lower jaw protrudes forward, causing your lower front teeth to sit in front of your upper teeth when your mouth is closed.

This often creates a "bulldog" appearance and can make chewing or speaking incredibly difficult.

The Crossbite

A crossbite happens when some of your upper teeth sit inside your lower teeth instead of on the outside. This misalignment can occur on just one side of the mouth, or on both sides simultaneously.

Left untreated, a crossbite often causes patients to subconsciously shift their jaw to one side to chew, leading to uneven facial development over time.

Why Fixing Bite Problems Matters

Ignoring a misaligned bite can lead to a cascade of painful dental issues over time. When your teeth do not fit together properly, it creates unnatural friction when you chew or speak.

This uneven pressure causes premature wear and tear on your tooth enamel, often leading to chipped, cracked, or excessively sensitive teeth. Furthermore, the constant strain of forcing a misaligned jaw closed severely affects your temporomandibular joint (TMJ).

Over time, this muscular strain frequently triggers chronic jaw pain, tension headaches, and even sleep-disordered breathing. 

Correcting these structural issues early is especially crucial for growing children to ensure proper, symmetrical facial development.

How Orthodontic Treatment Corrects Your Bite

The great news is that a misaligned bite is highly treatable. Whether you need an expander to widen a narrow palate or specialized brackets to shift your jaw, orthodontics fundamentally reorganizes your oral structure.

For patients seeking comprehensive overbite treatment in Milton, finding the right specialist is the key to success. Dr. Manish Aggarwal has over two decades of experience designing precise, digital treatment plans for complex underbite correction and deep bites.

If you are dealing with asymmetrical jaw shifts, trusting an expert orthodontist in Milton ensures that your facial bones are safely guided back into a healthy alignment. 

We proudly provide this specialized, functional care to families from Milton, Oakville, Mississauga, and Toronto.

Ready to Transform Your Smile?

You don't have to live with jaw pain, difficulty chewing, or a smile that makes you feel self-conscious. Fixing your bite is one of the smartest investments you can make in your overall, long-term health.

Our expert team is ready to help you achieve a perfectly aligned, fully functional smile.

Book your consultation at Bronte Family Orthodontics today, and let’s start your journey toward a healthier bite!

About the Author

Dr. Manish Aggarwal is a board-certified orthodontist and the founder of Bronte Family Orthodontics in Milton, Ontario. He holds a Master of Science in Orthodontics from the University of Manitoba (2005), a Doctor of Dental Surgery degree from the University of Western Ontario (2001), and a Bachelor of Science with Honours in Human Biology from the University of Toronto. Dr. Aggarwal completed a Pediatric Dental Residency at the Hospital for Sick Children in Toronto and is a Fellow of the Royal College of Dentists of Canada (FRCD).

With over 20 years of experience since opening Bronte Family Orthodontics in 2006, Dr. Aggarwal specializes in braces, Invisalign, and preventive orthodontics for patients of all ages. He brings a patient-centered approach to care, focusing on minimizing discomfort and treatment time while maximizing results. Dr. Aggarwal stays current with the latest advances in orthodontics through ongoing continuing education and is committed to providing personalized care to every patient.

References

1. Bell, R. A., & Kiebach, T. J. (2014). Crossbites of the teeth and jaws. Dental Clinics of North America, 58(1), 121-137. https://doi.org/10.1016/j.cden.2013.09.006
2. Katzberg, R. W., Westesson, P. L., Tallents, R. H., & Drake, C. M. (1996). Orthodontics and temporomandibular joint derangement. American Journal of Orthodontics and Dentofacial Orthopedics, 109(5), 515-520.
3. Okeson, J. P. (2019). Management of Temporomandibular Disorders and Occlusion (8th ed.). Elsevier.

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