Gummy smile also known as excessive gingival display is a smile that shows an excessive amount of gum under the upper lip. It is a common unaesthetic clinical condition, which can be caused by an abnormal dental eruption (delayed passive eruption),hyperfunction of the upper lip elevator muscle, excessive vertical growth of the maxilla bone, over-eruption of the maxillary anterior teeth, or a combination of the above described factors.

What is gummy smile?

Laughter is a condition in which the gums laughter under the upper lip too much. This is a common poor clinical condition, possibly due to abnormal teething (passive slow growth), increased upper lip lift muscle function, overgrowth of upper jaw bone, development of pre-maxillary teeth excess, or a combination of the factors described above.

The cause of gummy smile

In fact, the problem is mostly in the eye of the viewer. Your perception of your gum line may be affected by:

  • The height and shape of the teeth
  • The way your lips move when you smile
  • The angle of your jaw relative to the rest of the face.

According to researches, a number of factors can contribute to a gummy smile. Here are some of the most common ones.

The difference in the process of teething

Sometimes the way your adult teeth teething can lead to a gumsy smile. Although this varies from person to person, a 2014 medical study found it could be a family trait - a genetic problem.

If your gums cover more of the surface of your teeth as they come in - a condition called passive teething is altered - then you may end up laughing.

If the teeth in front of your mouth grow too far away or overgrown, your gums may have grown out too. This is called dentin extrusion.

Gummy smile can also occur due to a condition called maxillary redundancy. This is when your upper jaw bones grow longer than their normal length.

Lip gap difference

Gummy smile can happen when your upper lip is on the shorter side. And if your lips move too much when changing mouths or laughing, the more you move, the more gums you lose.

Effects of some drugs

Certain medications can cause your gums to overgrow around your teeth. This is called beneficial hyperplasia.

Medications that prevent seizures, suppress your immune system or treat high blood pressure can cause overgrowth of your gums.

In this case, it is important to treat the condition. If left untreated, clinical overgrowth can lead to periodontal disease.

Treatment options for Gummy smile


If too many of your gums cover the surface of your teeth, your dentist may recommend a procedure called gingivectomy. This procedure is also known as gum contouring and involves the removal of excess gum tissue.

When you have a gingivectomy, your periodontist or oral surgeon will give you a local anesthetic so that you won't feel pain during the procedure.

The dentist or surgeon will then use a scalpel or a laser to cut or reshape your gums to reveal more tooth surfaces.

After surgery, most patients need time to recover from 3 to 5 days. During these days, patients are encouraged to gentle oral hygiene, avoiding foods or drinks that might irritate the gums that have just been operated. The whole process of treatment of gums usually requires more than 1 session to achieve the most satisfactory results.

Lip repositioning surgery

If your lips are the cause of your gums, your doctor may recommend lip repositioning surgery. The procedure changes the position of the lips in relation to your teeth.

This surgery is done by removing part of the connective tissue from the underside of your upper lip. This will prevent the lip lift muscles located in the area of ​​your lips and your nose from lifting your upper lip too high above your teeth.

Gummy smile - one of the factors that have a lot to do with facial aesthetics

The smile contour or the cosmetic area - teeth is determined by a number of factors, including:

- The shape and size of your lips.

- Your facial muscles.

- Shape and size of teeth.

A beautiful smile is a smile that reveals as few gums as possible, the gum tissue exposed 1-2mm below the upper lip is beautifully contoured, balanced and harmonious with the upper lip.

In addition to the professional skills of doctors, Home Dental is always confident in the service of gummy smile treatments, NO PAIN - FAST RECOVERY thanks to LASER SIRONA technology of Germany helps healing much faster than using conventional treatments.

Are you interested in gummy smile treatment services?


  • Home Dental - The only German standard dentistry chosen by the Embassy of Germany.
  • Address: 30 Trieu Viet Vuong, Hai Ba Trung, Hanoi
  • Website:
  • Direct guarantee and insurance support for more than 15 insurance companies
  • Hotline: 0243.8289999 / 0914 66 5656
  • Working time: 8:30 - 20:30 all days

Appointment schedule