KNOWLEDGE BASE ARTICLE

Plastic surgery terms explained

Gummy smile

What does this term mean?

Definition

A gummy smile is a term used when someone shows an unusually large amount of gum when smiling. It is also known as a “gum smile.” Although it is not a medical condition, some people find it cosmetically bothersome. With a gummy smile, the gum above the upper lip is visible over a larger area than average, which can affect the balance of the smile.

In many cases, a gummy smile can be easily corrected with a small, non-surgical treatment, such as botulinum toxin (Botox).

In-Depth Explanation

How do you recognise a gummy smile?

Every smile is unique, but a gummy smile is characterised by a visible amount of gum showing above the upper teeth. A smile is generally considered “gummy” when more than 3 to 4 millimetres of gum is visible when smiling. This can appear on one or both sides of the mouth and can range from mild to pronounced.

Many people only become aware of their gummy smile when they see photos of themselves or when others point it out. Although it is not a medical problem, it can influence how someone feels about their appearance.

What causes a gummy smile?

Several factors can contribute to the development of a gummy smile. In most cases, it is a combination of anatomical features, muscle activity and dental alignment.

Common causes include:

  • Overactive upper lip muscles: The muscles that lift the upper lip are overly active, causing the lip to rise higher than usual when smiling.
  • Short upper lip: A naturally shorter upper lip exposes the gum more quickly.
  • Gum overgrowth: Excess gum tissue makes the teeth appear shorter.
  • Long upper jaw (vertical maxillary excess): The upper jaw is relatively long, making the gum area more visible.
  • Orthodontic factors: Misaligned teeth or jaws can also contribute.

Because the cause differs from person to person, proper assessment is essential for choosing the right treatment.

Why is a gummy smile perceived as bothersome?

A gummy smile is purely cosmetic and does not affect the health of your teeth, gums or muscles. Nevertheless, it can influence facial balance and lead to self-consciousness about one’s smile. Some people may smile less confidently or try to hide their mouth when speaking or laughing.

Your smile is an important part of your facial expression. When you feel restricted in expressing it, this can affect your self-esteem. For that reason, some people choose treatment even though it is not medically necessary.

Which treatments are available?

The right treatment depends on the underlying cause of the gummy smile. In many cases, a non-surgical treatment with Botox is enough to reduce gum visibility. Sometimes another or additional approach is needed.

  1. Botox for an overactive upper lip

When a gummy smile is caused by an overactive muscle (the levator labii superioris alaeque nasi), a small amount of Botox can temporarily reduce this muscle activity. This prevents the upper lip from lifting too far when smiling, reducing gum exposure.

This treatment is:

  • Quick (about 10 minutes)
  • Virtually painless
  • Temporary (3 to 4 months of effect)
  • Natural-looking

Botox allows you to smile normally, but with a slightly softer lip movement. This treatment is ideal for mild to moderate gummy smiles not caused by dental or skeletal issues.

  1. Dental or orthodontic treatments

If the gummy smile is related to dental structure or tooth length, dental solutions may help, including:

  • Crown lengthening
  • Gum contouring (gingivectomy)
  • Orthodontic treatment for misaligned or protruding teeth

These treatments are not performed at Kliniek het Bolwerk. For this, search online for a clinic specialising in cosmetic dentistry.

  1. Surgical jaw correction (rare cases)

Severe gummy smiles caused by an overgrown upper jaw (vertical maxillary excess) may require jaw surgery. This is an extensive procedure and is only considered when other treatments are ineffective or when functional issues are present.

Jaw surgery is also not performed at Kliniek het Bolwerk. Seek a maxillofacial surgery clinic in your area if this applies.

Is Botox for a gummy smile safe?

Botox has been safely used worldwide for decades. When performed by an experienced doctor, Botox treatment for a gummy smile is safe, effective and low-risk.

Correct dosing and precise placement are essential. Too much relaxation can cause an unnatural or stiff lip movement. This is why treatment should always be performed by a doctor with anatomical expertise and experience in this specific treatment area.

What does the treatment process look like?

A gummy smile treatment with Botox typically includes:

  • Consultation: The doctor analyses the cause of the gummy smile and discusses your goals.
  • Treatment: Small injections are placed in the muscle that lifts the upper lip.
  • Aftercare: No downtime is required; you can continue daily activities immediately.
  • Result: The effect starts to appear after 3 to 5 days. The final result is visible after about 10 days.
  • Duration: Results last on average 3 to 4 months, depending on the type of botulinum toxin used. After this, muscle activity gradually returns.

Many people repeat the treatment 2 to 3 times per year to maintain results.

Conclusion

A gummy smile is a common and harmless variation in the way we smile. Still, it can make you feel less confident about showing your full smile. Fortunately, several treatment options are available, with Botox being the most accessible and popular.

By gently reducing upper lip muscle activity, gum visibility decreases without affecting your natural facial expression. The treatment is quick, safe and provides a natural result when performed by an experienced doctor.

If you are unsure whether your gummy smile is suitable for treatment, a consultation with a plastic surgeon is the first step. Based on your facial anatomy, the doctor can recommend the most appropriate approach.

About the author:

Dr. David Jairath

Plastic Surgeon

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