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Overview of underbite

An underbite is a dental condition characterized by outward extension of the lower teeth. That is, the lower teeth extend farther than the upper front teeth. Another name for this condition is prognathism or Class III malocclusion.

An underbite may be severe in some instances, causing a far-forward extension of the lower teeth. Other causes may be mild and barely noticeable.

You see, an underbite isn’t just a cosmetic problem. Some people may tolerate mild cases of an underbite. However, severe cases may trigger some dental conditions including:

  • Problems with speaking
  • Difficulty chewing and biting food
  • Pain in the face and mouth due to jaw misalignment

If you don’t treat your underbite, it may cause health problems such as jaw pain, difficulty in speaking out and eating, chronic headaches, and tooth decay due to wearing of the enamel. But then, because yours has developed into an orthodontic condition doesn’t mean that it can’t be treated.

Currently, dentists make use of modern technology to improve your confidence and smile. You see, because of advancements in medical science, underbite correction has become less painful, tedious, or invasive.

Surgery becomes necessary when your underbite is caused by an underlying skeletal problem. In some cases, an underbite can be corrected without surgery.

What causes an underbite?

Several factors can affect your teeth’s alignment. You see, when your teeth are growing, the upper part fits a little over the lower part. Normally, your molars should fit into each other. Proper alignment of your teeth prevents biting of your lips, cheeks, and tongue.

Some factors can contribute to the development of an underbite. These include:

Habits during childhood

Certain childhood habits increase the risk for an underbite. These include:

  • Use of pacifiers by children above the age of 3
  • Thumb sucking
  • Prolong bottle-feeding beyond infancy
  • using the teeth to push on the tongue


There’s a genetic component to an underbite. What this means is that underbite can be inherited. you are more likely to have an underbite if there’s a history of the condition in your family. The shape and size of your tooth, as well as your jaw, is also determined by genetics.

Some people may be born with impacted teeth, closed teeth, or with teeth that have an abnormal shape or fail to fit well. Other birth defects include cleft palate or lip. These conditions may contribute to the formation of an occlusion.


Facial injuries can damage your jawbones permanently. In some cases, the broken jawbones can be repaired. However, surgical repair does not guarantee a perfect realignment of the jaws. Of course, the result will be an underbite.

Why should you fix an underbite?

An underbite should be corrected. An untreated underbite may cause complex dental problems, such as:

  • Tooth decay.
  • Poor oral hygiene.
  • TMJ and other joint disorders.

In addition, people are often embarrassed by their smile and it can impact their confidence and self-esteem. 

Can an underbite be fixed with braces?

Yes, an underbite can be fixed with braces. The braces help to move your teeth into their right alignment. Depending on how severe your underbite case is, you may require surgery. Your dentist may decide to extract a tooth or two from your lower jaw. It may help improve your underbite appearance.

Correct your underbite with beam clear aligners

Can an underbite be fixed with clear aligners? Yes, for less severe underbites Beam clear aligners are a patient-friendly option. They are better and more advanced than metal braces. You can correct your underbite with Beam clear aligners. Beam clear aligners offer many advantages compared to other options. Here’s what to expect when you use Beam:

  • Improved self-confidence: Beam improves your confidence and self-worth in social settings.
  • Invisibility: Beam aligners are thin and transparent. There are no ugly, visible metal wires, elastics, or brackets. So, you can wear that perfect smile and no one will know that there’s a brace in there.
  • Comfort and convenience: Beam aligners are custom-made. So, they will fit perfectly on your teeth without causing any inconvenience.
  • Efficiency: Beam clear aligners have a higher level of efficiency compared to conventional braces. Beam aligners will reposition your teeth correctly. Also, we will have your teeth checked every two weeks to ensure that the shift is occurring the right way.
  • No dietary restrictions: You can take off your Beam aligners and eat your desired foods. Beam doesn’t stop you from eating what you love, plus, the food doesn’t get trapped.

Beam believes in high standards. Our Australian local support team are available to respond to your inquiries 24/7. You can email us at or send us a message via WhatsApp on +61421577409.

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