What Is An Underbite?

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By Charlotte Miller

Are you curious to know what is an underbite? You have come to the right place as I am going to tell you everything about an underbite in a very simple explanation. Without further discussion let’s begin to know what is an underbite?

Your smile is not just a window to your personality; it’s also a reflection of your oral health. One common dental issue that can affect your smile and overall oral well-being is an underbite. In this blog, we’ll explore what an underbite is, its causes, effects, and available treatment options, so you can better understand and address this dental condition.

What Is An Underbite?

An underbite, also known as a Class III malocclusion or prognathism, is a dental condition in which the lower teeth protrude further forward than the upper teeth when the jaws are closed. In simple terms, it’s a misalignment of the upper and lower jaws that causes the lower teeth to jut out in front of the upper teeth, resulting in an irregular bite pattern.

Causes Of An Underbite

Several factors can contribute to the development of an underbite, including:

  1. Genetics: Heredity plays a significant role in the development of underbites. If your parents or grandparents have or had underbites, you may be more susceptible to this condition.
  2. Skeletal Growth: Abnormal jaw growth or an imbalance in the size of the upper and lower jaws can lead to an underbite. This growth issue may be due to genetics, injury, or certain medical conditions.
  3. Childhood Habits: Prolonged thumb-sucking or pacifier use beyond infancy can affect jaw development and contribute to the development of an underbite.
  4. Tongue Thrusting: If a person has a habit of pushing their tongue against their teeth while swallowing or speaking, it can exert pressure on the lower front teeth, pushing them outward and causing an underbite.

Effects Of An Underbite

An underbite can have several consequences, including:

  1. Aesthetics: The most visible effect of an underbite is the alteration of facial aesthetics. It can cause the chin to jut out, creating an unbalanced facial appearance.
  2. Oral Health Issues: Underbites can lead to various dental problems, such as uneven wear and tear on the teeth, increased risk of tooth decay and gum disease, and difficulty in maintaining proper oral hygiene.
  3. Speech Impediments: Some individuals with underbites may experience speech difficulties, including lisping or slurred speech, due to the misalignment of their teeth and jaws.
  4. Chewing and Digestion Problems: An underbite can make it challenging to bite and chew food properly, leading to digestive issues and inadequate nutrition absorption.

Treatment Options For Underbites

Fortunately, there are effective treatment options available for correcting underbites, depending on their severity:

  1. Orthodontic Treatment: For mild to moderate underbites, orthodontic interventions, such as braces or clear aligners, can gradually shift the teeth into their correct positions.
  2. Surgery: In severe cases of underbites, especially when the misalignment is primarily due to jaw structure, orthognathic surgery may be necessary. This surgical procedure repositions the upper and lower jaws to achieve a proper bite.
  3. Palatal Expanders: In children with underbites, palatal expanders can help widen the upper jaw, allowing the lower jaw to align correctly over time.
  4. Retainers: After orthodontic treatment, wearing a retainer can help maintain the corrected bite.


An underbite is a dental condition that can affect both your appearance and oral health. Fortunately, with timely diagnosis and appropriate treatment, it’s possible to correct an underbite and achieve a healthier, more balanced bite pattern and a confident smile. If you suspect you or your child has an underbite, consult with an orthodontist or a dentist for a comprehensive evaluation and treatment plan tailored to your specific needs.


Is It Ok To Have An Underbite?

An underbite can affect your health in several ways. Not only can it take a mental toll on you, but it can even influence the way you sleep. Underbite can also affect you in the following ways. Temporomandibular Joint Disorder (TMD).

Does Underbite Cause Problems?

Even though an underbite appears to be a cosmetic issue, the condition can cause several oral health problems, including: difficulty biting and chewing food. challenges with speaking properly or clearly. pain in the mouth and face caused by the misalignment of the jaw.

Do Underbites Get Worse With Age?

As a child ages, the underbite usually becomes worse with age, particularly during the growth spurt that occurs in the early teenage years (9-14). After this growth spurt, the growth of the jaw becomes stable and stops around mid-teenage years for females and late teenage years for males.

Can I Live With My Underbite?

Most people can live with slight underbites. But if you suffer from jaw pain or trouble eating, you should get help. Braces are common among adults. Other options include jaw expanders and underbite headgear.

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