Protruding Chin

Last updated date: 14-Jun-2023

Originally Written in English

Protruding Chin


Our jaw is significant for both cosmetic and practical reasons. Misaligned jaws, which occur when a person's upper and lower teeth do not precisely touch, are a true ailment that is mainly caused by heredity. When your teeth do not fit together properly, you might have problems not just with your teeth, but also with your gums, your temporo-mandibular joint (TMJ), and the muscles that move your jaw.

Although jaw surgery is not required if you have unequal jaw positions, you will most certainly have functional challenges that will influence your everyday activities.


What is Protruding Chin? 

prominent chin

The chin, which is placed beneath the mouth, is a bony protuberance. The chin can be more or less prominent depending on the individual. Some people may lack a chin, while others may have an overly prominent chin.

A prominent chin, often known as a projecting chin, is one that protrudes forward. It has a soft tissue or mandibular bone protrusion. This distinguishing feature can cause a variety of issues, and some people with big chins resort to cosmetic surgery. When it comes to changing the form of their chin, ladies choose the V-shaped or heart-shaped chin the most. However, keep in mind that the ideal chin shape is one that complements your face and its contours for a well-balanced overall appearance. 

This disease, also known as progenia, can cause psychological distress, which is why persons with large chins frequently seek cosmetic surgery. People with oversized jaws face a number of functional challenges, including:

  • Biting and chewing inefficiency
  • Worn tooth enamel makes you more susceptible to tooth decay, sensitivity, and other dental problems.
  • Temporomandibular joint disorder and chronic headaches
  • Speech clarity was compromised.
  • A prominent or extended chin


In general, a projecting chin is characterized by the lower jaw or mouth extending forward and the face being lengthy. The projecting chin can be classified into two types: Macrogenia and Mandibular Prognathism.

  • The first (Macrogenia) is a condition in which just one area of the chin is overdeveloped and there are no problems with the orthodontic state, the occlusion, or the mandible.
  • The latter (Mandibular Prognathism) is a condition in which the lower front teeth are more forward than the upper front teeth due to mandibular overgrowth.


Why do I have a Prominent Chin?

projecting chin

Some people are born with a larger jaw that is genetically inherited rather than the result of a medical problem. In reality, prognathism is inherited in only 2% of instances. This is frequently a familial characteristic, with numerous members of the same family possessing a more advanced lower jaw. This was true, for example, of the Habsburg dynasty, a family that held this characteristic.

A projecting chin, on the other hand, is almost often the result of a functional issue. Indeed, this abnormality may be connected with inadequate development of the upper jaw, since the jawbone, which is narrower than the mandible, prevents chin growth. In order to compensate, the lower jaw moves forward and the palate gradually atrophies.

Prognathism can also be caused by other disorders. A medical illness or genetic ailment that causes excessive jaw development, such as Crouzon Syndrome or Down Syndrome, or growth hormone problems.

As a result, the chin tends to creep forward more and more with time, emphasizing the deformity and necessitating cosmetic surgery to address the condition, which can become a serious health issue in some cases by obstructing respiration.

  • Are protruding chins attractive?

When it comes to social media and celebrities, the somewhat V-shaped or heart-shaped chin appears to be the most attractive nowadays. However, beauty is more about balanced qualities than a trend. A consultation with our cosmetic doctor will assist you in determining how harmonious your face is and how to modify your chin to best fit your face. 

  • How does prognathism affect my health?

Malocclusion (when your teeth do not fit together properly) can be caused by a projecting jaw. Malocclusion can lead to a variety of health concerns, including dental wear and tear, chewing difficulty, and speech challenges.

Brushing and flossing are also more difficult with misaligned teeth. As a result, many persons with prognathism are more likely to develop tooth decay (cavities) and gum disease.


What is Prognathism?

Prognathism Definition

Prognathism is a condition in which your jaw protrudes or juts out. This is usually done using your lower jaw. Prognathism is a congenital disorder. This indicates that it is innate in everyone. While symptoms may be present at birth, they can also appear later in life as a result of dental traumas (such as blunt force trauma to the mouth) or childhood behaviors (like thumb sucking).

What does prognathism look like?

There are different types of prognathism, including:

  • Mandibular prognathism. Your lower jaw sticks out farther than your upper jaw.
  • Maxillary prognathism. Your upper jaw sticks out farther than it should. Maxillary prognathism is sometimes called alveolar prognathism.
  • Bimaxillary prognathism. Both your upper and lower jaws protrude, or stick out.

Prognathism can be minor to severe. Some cases are more visible than others, and they can have a substantial influence on your quality of life.


How is Protruding Chin diagnosed?

Dental X-rays

Your healthcare professional will do a thorough physical examination and inquire about your symptoms and family history. They might also take:

  • Dental X-rays, which show your teeth and supporting jawbone.
  • A skull X-ray (cephalometric radiograph), which shows a side view of your face, including your jaw joints and occlusion (how your teeth fit together).
  • Dental impressions, which are used to create a model of your teeth.


How to fix Protruding Chin?

Some patients are no longer afraid to have cosmetic surgery in order to restore facial equilibrium and push the chin back. Aside from surgery, there is no other option to fix a protruding chin in aesthetic medicine.

In certain circumstances, patients should be treated after the age of 18, when their jaws have ceased developing. However, early intervention can be beneficial and can enhance patients' self-confidence. If you are concerned about lower jaw protrusion, regardless of your age, you should come in for a consultation - treatment is always available.

Lower jaw protrusion is commonly treated with braces. Orthodontists will do a comprehensive examination of your mouth to help in diagnosis when you come in for your initial orthodontics consultation. They will then propose the finest remedies for you as well as the optimal age to begin therapy.


What is Orthognathic Surgery?

Lower jaw protrusion

Jaws that are out of balance or in the improper posture can cause a variety of issues with eating, swallowing, breathing, and overall face look. Jaw alignment issues can be caused by an accident, a congenital condition, or a difference in development rates between the upper and lower jaws. Correct identification and treatment of jaw abnormalities can aid in 

  • The management of persistent jaw discomfort,
  • Biting and chewing difficulty, and
  • Other jaw-related issues. 

Finally, treatments that bring the jaw and teeth into better balance will enhance your jaw's functioning and health. Distraction osteogenesis is one of these procedures that can help grow or stretch the jawbone to correct faults and abnormalities.

While braces are frequently used to correct misaligned teeth, traditional orthodontic methods are only successful when the issue is limited to the teeth. For some people, tooth misalignment is caused by improper jaw posture. Orthognathic surgery is frequently required in these instances. The goal of orthognathic surgery is to realign a misaligned jaw so that teeth contact properly and the jaw operates normally. Orthognathic surgery, in addition to its practical functions, can assist enhance a patient's look by addressing facial imbalances such as a receding chin or Protruding jaw.


What is Protruding Chin Surgery?

Protruding Chin Surgery

Protruding chin surgery is commonly used to describe the form of the chin when it is positioned outward, making the face appear longer. Correction of jaw abnormalities sometimes necessitates a collaborative effort between an oral surgeon and an orthodontist. 

The particular treatment approach will rely on your unique ailment, as with any other. Corrective jaw surgery often entails relocating all or part of your upper jaw, lower jaw, or chin. An orthodontist may also use braces to reposition your teeth into a better position in addition to this surgery. This can be done either before or after surgery.

Surgery Methods

  • Chin reduction surgery 

If the occlusion is normal but just the chin structure is overdeveloped, chin reduction surgery can readily address the issue.

  • Lower mandible surgery

When there is Mandibular Prognathism, this procedure is used. The approach itself is a technique for shifting the lower jaw backward in a way that relieves pressure on the jaw joint while still protecting the lower jaw nerves.

The sagittal split ramus osteotomy (SSRO) is done at this time to cut and overlap the posterior section of the jawbone in order to correct the projecting lower jaw.

Protruding chin surgery is recommended to you if:

  • You have a lengthy face with a prominent chin.
  • Your chin and lower face are excessively long.
  • Because of your developed lower jaw, you have a sunken mid-face.
  • You have functional problems as a result of malocclusion.


  • Two Jaw Surgery

If the patient's face is too long or too short, he or she will need upper and lower jaw surgery, often known as "two jaw surgery." 

Two jaw surgery, also known as double jaw surgery, is a procedure in which a lower jaw osteotomy is performed concurrently with an upper jaw osteotomy, which involves cutting an upper jaw from the top teeth to the lower section of the nose.


What to know about Genioplasty?


Genioplasty is a type of cosmetic surgery in which the chin is repositioned or reshaped to enhance facial symmetry. Surgeons perform genioplasty or chin repositioning surgery to treat the following conditions:

  • Receding chins, or retrogenia
  • Overly large or extended chins
  • Chins that are too short or too tall
  • Misaligned or asymmetrical chins
  • Abnormal dental bite


genioplasty makes it possible to move the chin back in two different ways:

  • By drilling through the lower jawline.
  • To preserve facial harmony, the surplus bone slice is shattered and attached to the anterior section of the chin during jaw fracture surgery.

A genioplasty is the best therapy for a prominent chin. The procedure used is determined not only by the doctor, but also by the amount of the protruding chin.


Sliding genioplasty procedure

A sliding genioplasty procedure involves the following steps:

  1. The surgeon makes an incision along the lower gum line and the inside of the lower lip.
  2. To gain access to the chin bone, the surgeon creates an incision in the layer of soft tissue.
  3. After exposing the chin bone, the surgeon makes a short vertical cut in the chin to serve as a reference point for the procedure.
  4. A horizontal incision is made below the roots of the bottom teeth by the surgeon. By cutting at different angles, the surgeon can alter the height of the chin. If they need to make the chin smaller or shift it backward, doctors may take out a wedge-shaped portion of bone.
  5. They move the bone fragment forward, backward, or to the side. Following chin placement, the surgeon will examine the alignment and file any extra bone along the jawline.
  6. They will use screws and a metal plate to join the chin bone to the jaw. Some surgeons may employ biodegradable plates and screws instead of metal ones so that the screws are not felt beneath the skin.
  7. The incision is sutured shut by the surgeon. Then, to reduce swelling, they apply compression tape to the front and sides of the chin.


Recovering from Chin Surgery

The length of your recovery varies on the sort of surgery you have. However, you will have various adverse effects such as edema, bleeding, bruises, and so forth. Swelling is normally at its peak on the third day and then begins to subside. Swelling under the chin may last for 3 to 6 months. As the bruising fades, it may migrate to the skin. It will most likely go from black/blue/purple to green, then to yellow.


Risks and Complications

nasal bleed

Minor nasal bleeds, swelling at the procedure site, and slight abrasion at the corners of your lips are the most prevalent short-term hazards. As with any operation with an open incision, you may develop an infection. Of course, your surgeon will prescribe antibiotics and anti-inflammatory medicine to help with this. Your jaw joint may also become tight, which might linger for months.

Long term risks that are unlikely to occur.

Some long-term risks that may occur in the long run include:

  • Nerve damage that might result in persistent numbness or altered feeling
  • Infection of the plates used to fix the new position of the jaws (more common if you smoke)
  • Because the muscle force that created the misalignment is still present, your jaw and teeth may return to their original position.



If you have a prominent, it may affect not only your overall health but also your self-esteem. As there is no medical treatment for a projecting chin, surgery provides customized options that allow the chin to be pulled down and produce outstanding results. Genioplasty is a surgical technique performed by professionals that improves the look of the face by balancing the jaws, nose, chin, and grin. It entails altering a patient's facial profile and symmetry by modifying the curve of the chin. This operation can be performed alone or in conjunction with other jaw-related procedures to achieve the desired medical or aesthetic effect for the client.