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MosdentISTANBUL 1992
// Mosdent Journal

Gummy Smile: Causes, Treatments, and Celebrity Transformations

Gummy smile has graded treatments with measured effects: in a meta-analysis of botulinum toxin A, gingival display fell by a mean 2.51 mm at two weeks and 2.24 mm at three months, while lip repositioning surgery reduced it by 2.87 mm. Which cause calls for which option.

Dr Hakan KavalWritten by
Published
7 minread
Dr Ferit Kaval, PhDmedical review
Close-up smile showing a wide band of pink gum above the upper front teeth
Mosdent Journal·7 min
// Quick answer

A gummy smile, clinically called excessive gingival display, is a smile that shows more than 3 to 4 millimetres of gum above the upper teeth, and it traces back to an overactive upper lip, excess gum tissue, short or worn teeth, or vertical overgrowth of the upper jaw. Treatment follows the cause. In a meta-analysis of botulinum toxin A, gingival display fell by a mean 2.51 mm at two weeks and 2.24 mm at three months (PubMed 36835971); lip repositioning surgery reduced it by 2.87 mm at three months, easing to 2.10 mm by twelve months (PubMed 33325589).

// Key takeaways
  • 01Excessive gingival display is defined as more than 3 to 4 mm of gum visible above the upper teeth during a full smile, and it is an aesthetic finding rather than a disease.
  • 02Botulinum toxin A reduced gingival display by a mean 2.51 mm at two weeks and 2.24 mm at three months, with 1.25 to 7.5 units injected per side into the levator labii superioris group (PubMed 36835971).
  • 03Lip repositioning surgery gave 2.87 mm reduction at three months, 2.71 mm at six months and 2.10 mm at twelve months across eight studies, so roughly a quarter of the gain relapses inside a year (PubMed 33325589).
  • 04Adding myotomy to lip repositioning produced greater reduction at six months than the procedure without it (P < 0.02; PubMed 33325589).
  • 05When the cause is vertical maxillary excess, orthognathic surgery is the structural answer; muscle-driven cases are the ones that respond to botulinum toxin, and gum or bone excess is handled by crown lengthening or contouring.

When Smiling Shows More Than Intended

A beautiful smile is often associated with confidence, charisma, and health. However, when the gums are overly exposed while smiling, it can create what is commonly referred to as a gummy smile. While not medically harmful, a gummy smile can affect self-esteem and influence how one perceives their facial aesthetics.

/ Gummy Smile Overview and Causes

What Is a Gummy Smile?

A gummy smile, also known as excessive gingival display, occurs when more than 3–4 millimeters of gum tissue is visible above the upper teeth during a full smile. While some people may see it as charming, others feel it throws off the harmony of their smile and facial balance.

Characteristics of a Gummy Smile:

  • More than 4mm of gum visible while smiling
  • Short or small-looking upper teeth
  • Excess gum tissue or high upper lip line
  • Often symmetrical, but can also be one-sided

What Causes a Gummy Smile?

Understanding the root cause is essential to choosing the right treatment. So, what causes a gummy smile? There are several possible factors:

1. Overactive Upper Lip Muscles

The levator muscles may lift the upper lip excessively while smiling, exposing more gum than normal.

2. Excessive Gum Tissue

Known as gingival hypertrophy, some people naturally have thicker or more prominent gum tissue.

3. Short Upper Teeth or Worn Enamel

Teeth that appear short due to wear or incomplete eruption can make the gums look more prominent.

4. Vertical Maxillary Excess

An overgrowth of the upper jaw (maxilla) can push the gums downward, resulting in more visibility.

5. Genetics

Many people simply inherit the trait. In fact, gummy smile celebrities like Gwen Stefani and Nicole Kidman have helped normalize it.

Gummy Smile in Men vs. Women: Aesthetic Differences

While both genders can experience gummy smiles, treatment expectations and approaches often differ.

  • Men may prefer subtle or natural corrections
  • Women often seek refined, proportionate upper lip movement
  • Lip mobility, bone density, and muscle strength can influence treatment strategy

Personalized planning is essential for achieving facial balance across gender identities.

Gummy Smile in Children and Teens: Can It Be Prevented?

Early detection is key. In children, certain habits or developmental delays can be early indicators.

  • Orthodontic screening should begin at age 7
  • Habits like thumb-sucking and mouth-breathing should be addressed early
  • Jaw growth evaluations can prevent future maxillary overgrowth
  • Early correction of deep bite may limit gum exposure later

/ Gummy Smile Treatment Options Without Major Surgery

How to Fix a Gummy Smile: Treatment Options

If you're wondering how to fix a gummy smile, there are multiple solutions available, ranging from non-invasive to surgical.

Botox for Gummy Smile: A Quick and Non-Surgical Option

Gummy smile Botox is one of the most popular modern solutions, particularly for those looking for a fast and non-invasive approach.

  • Involves injecting botulinum toxin into the muscles that raise the upper lip
  • Weakens muscle activity to reduce gum exposure
  • Results in 3–5 days, lasts 3–6 months
  • Suitable for mild-to-moderate gummy smiles
  • No downtime, affordable, but temporary

Lip Fillers and Gummy Smile: Complementary or Conflicting?

Some patients who consider gummy smile treatment also ask about lip fillers. But do they work together?

  • Can lip fillers worsen a gummy smile? Yes, if they push the lip upward
  • Can lip fillers help? In rare cases, yes, by adding volume to cover the gum
  • Best approach? Botox for muscle control, then optional lip filler for volume, with proper planning

Consultation with a professional is key to balancing the two treatments safely.

Orthodontic Treatment for Gummy Smiles

When gummy smiles are caused by improper bite or misaligned teeth, orthodontics can help:

  • Braces or aligners reposition teeth
  • Temporary Anchorage Devices (TADs) can intrude over-erupted teeth
  • Often used in growing children and teens but effective in adults too

/ Gummy Smile Treatment Options and Cost

Gummy Smile Surgery: Permanent and Structural Solutions

Surgical options provide long-term or permanent results and target the underlying structure:

1. Crown Lengthening Surgery

  • Removes excess gum and bone tissue
  • Makes teeth appear longer
  • Ideal for gum overgrowth and short teeth

2. Lip Repositioning Surgery

  • Repositions upper lip attachment point
  • Limits excessive elevation of the lip
  • Less invasive than jaw surgery

3. Orthognathic (Jaw) Surgery

  • Addresses skeletal issues like vertical maxillary excess
  • Requires general anesthesia and orthodontic prep
  • Most invasive but highly effective for severe cases

Laser Gum Contouring

This quick, cosmetic procedure reshapes uneven or bulky gums using laser technology.

  • Minimally invasive
  • Immediate visual improvement
  • Used alone or with veneers/crowns

Gummy Smile Makeovers: Before and After Transformations

Botox Example

Before: 5 mm gum exposure due to lip hyperactivity

After: 2 mm reduction with balanced lip lift

Crown Lengthening Example

Before: Short teeth hidden by excessive gums

After: Recontoured gum line and visible, proportionate teeth

Orthognathic Surgery Example

Before: Skeletal excess causing 8+ mm gingival display

After: Jaw repositioned for harmonious facial proportions

Visual results help patients feel more confident about pursuing treatment.

Smile Design: Combining Treatments for Best Results

In many cases, combining multiple treatments yields the best aesthetic and functional results.

  • Botox + Veneers for quick cosmetic improvement
  • Gum contouring + Orthodontics for alignment and balance
  • Lip repositioning + Crowns to improve gum-to-tooth ratio

This “smile makeover” approach is tailored individually for optimal results.

Cost Breakdown: How Much Does Gummy Smile Treatment Cost?

TreatmentCost Range (USD)DurationMaintenance
Botox$200–$6003–6 monthsYes
Laser Contouring$500–$1,500PermanentNo
Crown Lengthening$1,000–$3,000PermanentNo
Lip Repositioning Surgery$2,000–$4,000Long-lastingRare
Orthognathic Jaw Surgery$8,000–$20,000+PermanentNo

Note: Pricing varies by country, clinic, and complexity.

/ Gummy Smile Celebrities and Personal Choice

Gummy Smile Celebrities: Owning Their Look

Some celebrities with gummy smiles have opted for treatment, while others proudly wear their natural smiles.

  • Gwen Stefani – Embraces her signature smile
  • Natalie Portman – Natural gummy smile adds character

Their stories show that treatment is a personal choice, not a requirement, whether it’s embracing a natural charm or choosing to pursue a more sculpted, camera-ready Hollywood Smile .

Psychological and Social Impact of a Gummy Smile

Even if a gummy smile is harmless medically, its emotional effects can be real:

  • Lower self-esteem
  • Avoiding photos or public speaking
  • Social anxiety, especially in teens
  • Professional self-consciousness

Treating a gummy smile is often as much about emotional well-being as physical aesthetics.

How to Choose the Right Gummy Smile Treatment

Use these criteria to make the best choice:

  • Cause-based diagnosis : Is the issue muscular, gingival, or skeletal?
  • Longevity : Do you want a temporary fix or a permanent solution?
  • Budget : Botox is affordable; surgery is a bigger investment.
  • Recovery : Can you afford downtime or want quick results?

A consultation with a cosmetic dentist or oral surgeon will help clarify your options.

/ FAQs

What is a gummy smile?

Excess gum tissue (usually more than 3–4mm) visible when smiling.

How to fix a gummy smile?

Options include Botox, laser, crown lengthening, lip repositioning, orthodontics, or jaw surgery.

How to get rid of a gummy smile without surgery?

Botox and laser contouring are great non-surgical alternatives.

What causes a gummy smile?

Common causes: overactive lip, extra gum tissue, short teeth, jaw structure, or genetics.

Is gummy smile treatment permanent?

Botox is temporary; surgery, laser, and orthodontics can be long-term or permanent.

Conclusion: Your Smile, Your Confidence

A gummy smile doesn’t have to limit your self-image. From fast fixes like gummy smile Botox to long-lasting surgical options, there’s a treatment path that fits your needs, budget, and comfort level.

Whether you choose to embrace your natural smile like some gummy smile celebrities, or opt for a transformative aesthetic procedure, the power is in your hands, and your smile is worth it.

Let’s plan the right treatment together.

Free Assessment→
GeneralMosdent
// Written by
Hakan Kaval
Dentist Hakan Kaval
Implantology · Aesthetic Dentistry
Medically reviewed by: Dr Ferit Kaval, PhD

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// Frequently Asked

Frequently asked questions

What is a gummy smile?+

It is a smile that exposes an unusually wide band of gum above the upper teeth, known clinically as excessive gingival display. The usual threshold is more than 3 to 4 mm of visible gum during a full smile. Studies of botulinum toxin treatment enrolled patients with more than 2 mm of exposure, and their mean pre-treatment display ranged from 3.5 to 7.2 mm (PubMed 36835971).

Does Botox fix a gummy smile and how long does it last?+

Botulinum toxin A weakens the muscles that lift the upper lip. The pooled meta-analysis found a mean reduction of 2.51 mm at two weeks and 2.24 mm at three months, with results gradually declining but not returning to baseline by twelve weeks (PubMed 36835971). Doses ranged from 1.25 to 7.5 units per side. It suits muscular causes, not skeletal ones.

Is lip repositioning surgery permanent?+

Not fully. Pooled data from eight studies show 2.87 mm reduction at three months, 2.71 mm at six months and 2.10 mm at twelve months, which means roughly 25% relapse within the first year (PubMed 33325589). Adding myotomy improved stability at six months. The review authors suggest combining the surgery with periodontal, restorative or botulinum toxin approaches for steadier results.

When is jaw surgery needed for a gummy smile?+

Orthognathic surgery is the route when the cause is skeletal, specifically vertical maxillary excess, where the upper jaw itself sits too low and pushes the gum line down. It requires orthodontic preparation and general anaesthesia. Conservative options such as botulinum toxin are described as alternatives in borderline cases and where the driver is hyperactivity of the upper lip levator muscle complex (PubMed 36835971).

Can lip fillers make a gummy smile worse?+

They can, if the filler pushes the upper lip upward and raises the smile line further. In selected cases, added volume can drape over the gum and reduce visible exposure. Because the effect depends on lip anatomy and muscle pull, filler is planned after the cause of the gingival display is identified, not as a stand-alone fix for it.

How much gum showing is too much?+

More than 3 to 4 mm of gum visible above the upper teeth during a full smile is the common working threshold for excessive gingival display. Below that, exposure is generally read as within the normal aesthetic range. Trials on botulinum toxin set their entry criterion at more than 2 mm, and enrolled patients averaged 3.5 to 7.2 mm before treatment (PubMed 36835971).

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