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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.

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.
  • Prolonged 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.

Can underbite be fixed?

At Beam we will use your impression kit to assess your smile. The purpose is to determine the cause of your underbite and its severity. Our experts will recommend a suitable plan of treatment for you, which will include advising if our clear aligners are not the best solution for your underbite. 

Will braces fix an underbite?

Yes, they can. Dental braces are designed to fix misaligned and crooked teeth, as well as underbites. A dental brace fixes an underbite in three steps:

  • The orthodontist attaches the braces to your teeth to straighten and align them.
  • After aligning your teeth, the brackets will be fitted with elastic bands. The purpose of this is to shift your jaw slowly into its right position through constant pressure. Ensure that you remove the bands before brushing your teeth, eating, or drinking.
  • Finally, you may have to wear a retainer to position your teeth correctly. Correcting an underbite with dental braces may take a minimum of 2 years.

Is there a better way to correct underbite?

Yes! You can use better alternatives to braces for underbite treatment. These include clear aligners.

Beam Clear aligners

Beam clear aligners are a suitable alternative for braces for underbite treatment. They are best for people who are uncomfortable with the changes which braces make to their appearance. Clear aligners use near-invisible trays that gradually mold your teeth to their right position. You will have to switch the trays as time goes on.

Many people prefer clear aligners because of their invisibility. They also have a shorter correction time (usually a year). However, the correction time depends on the severity of your underbite.

Some of the benefits of using Beam clear aligners include:

  • Improved self-esteem: repairing your underbite will beautify your smile. Of course, with this change, your confidence receives a boost, helping you to relax and smile confidently while meeting people and taking photos.
  • Improved oral hygiene: Beam clear aligners can be removed when it’s time to clean your teeth or eat. This means that your teeth will be clean and free of plaque, and you’ll not have any food particles trapped in there.
  • Personalized treatment: beam clear aligners are custom-made. So, they will be created after making an impression of your tooth. This means that they will fit well.
  • Comfort: Beam clear aligners are thin, light, and comfortable. There are no elastics, metal wires, or plates attached to your teeth. You can also eat free without worrying about food getting stuck in your teeth. What’s more? You can always wear them with ease.
  • Confidential treatment: Clear aligners are near invisible. So, unlike wearers of traditional braces, you won’t feel unnecessarily embarrassed whenever you open your mouth.

Beam believes in high standards. This explains why our local Australian 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.

More to explore

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