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Underbite in Children: Causes, Treatment, and Symptoms

According to dentist in penang, an underbite is a condition in which the lower teeth protrude farther than the upper teeth.

An underbite affects 5-10% of the world’s population. Underbite affects 15% of Chinese people but just 5% of Americans do, indicating that it is at least partly a hereditary issue.

Untreated underbite may have a negative impact on everything from self-esteem to sleep.

What is the definition of an underbite?


An underbite is a form of bite misalignment where the bottom teeth protrude more than the top teeth. Mandibular prognathism or a Class III malocclusion are other terms for an underbite.

Due to the protrusion of the bottom jawbone in moderate to severe instances of prognathism, the face may take on a “bulldog” appearance.

Beyond looks, this is one of “the most severe” jaw, tooth, and facial diseases that may arise. An underbite is referred to as a “poor bite” since it may be hazardous to one’s general health as well as their oral health.

Because of the many problems that an underbite may create, it’s important to seek underbite repair from your dentist and/or orthodontist.

Causes of Underbite

An underbite may be cause by a variety of causes, such as genetics, environment, or other disorders.

Genetic Variables

Genetic predisposition is unquestionably one of the reasons of underbite. Underbite seems to be caused by a unique genetic trait McKusick No *176700 in various European noble lines.

The iconic Habsburg jaw, observed in the Spanish Habsburg line between 1516 and 1700, is the most famous of these hereditary problems.

An underbite may also be cause by other hereditary disorders, such as:

/ Collins Treacher Syndrome

– Basal cell carcinoma with a void

/ Acromegaly

– Binder syndrome is a serious condition that affects a person’s ability to move

/ Osteodysplastic geroderma

– Rabson-Mendenhall syndrome is a condition that affects a person’s ability to

Childhood Habits

Several childhood practices may contribute to the development of an underbite later in life:

\ Sucking the thumb

-After the age of three, using a pacifier is discouraged.

\ Following infancy, bottle feeding is recommended.

– During the toddler years, tongue thrust (pushing the tongue forward against the teeth) is pronounced.

Injury to the body

An underbite might result from a fractured jawbone that heals poorly. Even after surgery, broken jaws may not heal correctly, and a lifelong underbite may result.


Jaws may protrude as a result of a malignant or benign tumor, such as oral basal cell carcinoma.

Lip or Palate Cleft

An underbite is more common in those born with a cleft lip or palate.

How to Get Rid of an Underbite

To correct an underbite, there are five primary treatment options:

  • Treatment with braces
  • Extraction of teeth
  • Tooth reshaping is a procedure that involves reshaping the teeth.
  • Surgical correction of the underbite
  • Dentistry with a “facelift”

The kind of underbite treatment your orthodontist will recommend is determined on the severity of your underbite.

Orthodontics may be used to correct an underbite in children. If your underbite is caused by skeletal problems, you may need surgery to correct it.

1. Treatment with braces

A minor underbite may be corrected with orthodontic treatment like as braces or Invisalign. In youngsters, a “pseudo” class III underbite may be addressed with braces and/or tooth extractions if the lower teeth are in advance of the upper teeth but the jaw development is normal.

When it comes to treating underbite in youngsters, metal braces are most often used.

Children with a class III underbite may benefit from Invisalign or other transparent aligners, although tooth extractions are probable.

For an underbite, never use at-home clear aligners. Treatment should be overseen by your orthodontist to ensure that the jaws are correctly aligned.

Your orthodontist may recommend headgear in addition to or instead of braces. Metal bands fastened to the upper back teeth and wrapped around the skull pull the jaw into place using a reverse-pull face mask.

An upper jaw expander may also be given for your youngster. An upper jaw expander is a plastic and wire device that is attached to the roof of the mouth and is turned everyday to enlarge the jaw. The palate extends to adjust the bite over the course of a year.


Braces cost between $2,000 and $8,000.

The cost of lingual braces ranges from $8,000 to $10,000.

$4,000-$7,000 for clear aligners

2. Extraction of teeth

Overcrowding that creates an underbite may be corrected by tooth extraction. Lower bicuspids (premolars) are usually extracted during underbite extractions.

To alleviate the strain this produces and let the jaw relax into its normal posture, a tooth extraction may be required. This is usually the initial step before braces or other treatment choices.

Price range: $75-$300 per tooth

3. Re-shaping of the teeth

Tooth reshaping is a cosmetic dentistry procedure for those who have an underbite caused by teeth that don’t fit correctly in their mouth.

The bottom teeth are chopped down and modified somewhat, and veneers are put on the top teeth in this procedure. For certain moderate occurrences of underbite, tooth contouring may adjust the way the jaw fits together.

Because it just affects tooth enamel, reshaping teeth is usually painless. It may also help to prevent tooth decay.

Price range: $50-$300 per tooth

4. Surgical procedures

Orthognathic surgery (jaw surgery) is a therapy option for underbite in older patients or in situations of severe underbite.

Jaw surgery for an underbite is usually combined with orthodontic therapy.

In severe instances of prognathism, jaw surgery may correct the position of your upper and lower jaws and establish normal biting patterns

Each procedure is unique and suited to the needs of the patient. The average recovery period for jaw surgery is 10 to 12 weeks.

Before insurance, expect to pay $20,000-$40,000.

5. Dentistry for a “Facelift”

The goal of “facelift” dentistry is to treat bite issues such as underbite. JawTrac and VENLAY technologies are using in “Facelift dentistry” to avoid the necessity for braces and jaw surgery.

Only adult patients are eligible for this treatment method, which promises to fix underbites in as little as three weeks using electronic jaw monitoring measurements.

The measurements are calculate base on the jaw’s estimated natural position without malocclusion (teeth misalignment).

Costs start at $35,000 and go up from there.

Symptoms and Complications of an Underbite

The following are some of the most common side effects of an underbite:

-Problems with speech

-The pain in the jaw or mouth is referring to as temporomandibular

-Headaches that occur often

-TMJ/TMD (temporomandibular joint disorder) (pain in the temporomandibular joint)


-Problems with the stomach

-Breathing via the mouth

-Apnea (sleep deprivation)


-Hypertension is a condition in which the blood pressure (high blood pressure)

The presence of an underbite is usually easy to detect. Even in younger children, the conditions and symptoms are usually obvious and easy to identify by a dentist.

Let your dental care provider know if you or your child are experiencing any of the above problems.

The degree of the malocclusion influences the symptoms of an underbite in part.

A noticeable extension of the lower jaw beyond the top front teeth is the most evident indication. Overcrowding in the teeth and a sore jaw are other prevalent problems.

Children’s Underbite

Children with an underbite are traditionally not treat until they reach the age of seven. However, an orthodontic evaluation between the ages of 2 and 5 years old may enable your child’s orthodontist to correct the growth difficulties that are causing the underbite before more drastic treatment is require.

If your child’s underbite makes eating, speaking, or breathing difficult, or if he or she was born with a birth abnormality, surgery may be require sooner than expecting.

Because an underbite might make brushing and flossing more difficult, keep an eye on your child’s teeth. Early indicators of cavities or gum disease, such as bleeding gums, should be observe.

Overbite vs. Underbite: What’s the Difference?


An overbite (retrognathism) is a condition in which the upper front teeth protrude significantly beyond the lower teeth and jaw. It’s the polar opposite of an underbite, in which the upper teeth are position beneath the lower teeth.

Both an underbite and an overbite may make patients feel self-conscious and cause breathing, eating, and speech difficulties.

Is the treatment of an underbite cover by insurance?


Dental insurance will normally pay underbite therapy if the insurance company deems it is medically necessary. Keep in mind that most dental insurance companies only cover $1,000-$2,000 in total coverage per year, which may not be enough to pay severe underbite treatment.

The expense of your underbite treatment is unlikely to be reimburse by insurance if the insurance company (or your dentist) believes it is cosmetic.

Orthognathic surgery for an underbite is a rare scenario in which your medical insurance will cover part of your dental treatment. If your doctor and dentist concur that your underbite is causing airway disorders like sleep apnea, your medical insurance may cover treatment.

Facelift dentistry is not cover by most dental insurance plans.

To minimize unexpected expenditures, always verify with your dentist and your whole dental insurance plan before beginning treatment. Every insurance plan and patient situation is unique.

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