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Cosmetic Dentistry

Can Cosmetic Dentistry Fix a Gummy Smile?

A gummy smile has several possible causes, each with a different treatment. Learn about crown lengthening, lip repositioning, and orthodontic solutions.

D Dr. Scott Bonin
  • Cosmetic Dentistry
  • Smile Makeover
  • Gum Disease
Bonin Dental Care hanging sign in Old Downtown Windsor

Understanding the Gummy Smile

A gummy smile is one where a significant amount of gum tissue shows when you smile. Typically, about 2 to 3 millimeters of gum tissue shows in a balanced smile. If more than 4 millimeters shows, or if your gumline is uneven across your teeth, you might have what’s considered a gummy smile.

The interesting thing about gummy smiles is that the problem isn’t always your gums. Sometimes your teeth are shorter than average, which means more gum is visible. Sometimes your lips are positioned differently than average, revealing more gum tissue. Sometimes your jaw structure is the culprit. Understanding the root cause of your gummy smile is crucial because the treatment depends on what’s causing it.

The good news is that cosmetic dentistry offers several solutions, and often an approach works beautifully for your specific situation.

Causes of a Gummy Smile

The most common cause is simply anatomical variation. Some people are born with teeth that are shorter than average, or with thicker gum tissue. Neither of these is abnormal; they’re just natural variation in how teeth and gums are shaped and proportioned.

An overgrown or hyperplastic upper jaw can cause excessive gum showing. If your upper jaw bone is larger than typical, more of your teeth are covered by gum and bone, leaving them shorter and with more gum coverage.

Your lip position affects how much gum shows. Some people have lips that sit higher, exposing more gum tissue. This is a muscular variation and doesn’t necessarily mean anything is wrong.

Gum disease can cause gummy smiles in some cases. If you’ve had severe periodontitis that caused bone loss, your teeth might appear longer but your gums might be positioned higher than ideal aesthetically.

Sometimes teeth develop differently. If your teeth are shorter than normal or if they have short crowns, more gum tissue is visible.

Certain medications can cause gum tissue overgrowth. Some blood pressure medications and seizure medications are known to cause gingival hyperplasia (excessive gum growth).

Gum Contouring and Crown Lengthening

For patients where excess gum tissue is the primary concern, gum contouring is often the best solution. This involves removing excess gum tissue to expose more of the tooth crown. The procedure is done with a soft tissue laser, is relatively quick, and creates immediate results.

Crown lengthening is similar to gum contouring but more extensive. It removes not only gum tissue but also a small amount of underlying bone to expose significantly more of the tooth. This is recommended when you need more dramatic changes than gum contouring alone can provide.

Both procedures are performed by periodontists or dentists with soft tissue expertise. At Bonin Dental Care, Dr. Bonin uses laser technology to reshape gum contours safely and precisely.

Orthodontic Solutions

If your gummy smile is caused by a vertical maxillary excess (where your upper jaw is positioned too far forward or downward), orthodontic treatment might be the best approach. Braces or clear aligners can reposition your teeth so they sit higher in your jaw, reducing the gum showing.

This approach takes longer than gum contouring, but it addresses the underlying jaw position rather than just removing gum tissue. Some patients combine orthodontia with other treatments for optimal results.

For patients with a hyperactive upper lip or a lip that sits too high, orthodontia can sometimes help by changing tooth position so the lip rests at a better position.

Lip Repositioning

In cases where a high lip position is the primary cause of excessive gum showing, lip repositioning surgery might be recommended. This surgical procedure repositions the muscles and tissues that control upper lip movement, causing the lip to sit lower and cover more of the gums when you smile.

This is a more invasive approach than gum contouring and is usually recommended only after other options have been considered. It’s often performed by oral surgeons or periodontists.

Combination Approaches

Sometimes the best solution combines multiple approaches. A patient might have orthodontia to reposition their teeth, followed by gum contouring to shape the gumline, followed by cosmetic whitening and veneers to complete the smile makeover.

Dr. Bonin evaluates your specific situation and recommends the most effective approach or combination of approaches to achieve your goals.

Evaluating Your Gummy Smile

The first step is understanding what’s causing your gummy smile. This requires an evaluation by a dentist with expertise in cosmetic dentistry. Your dentist takes measurements, evaluates your jaw position, assesses your tooth size and positioning, and discusses your smile goals.

Digital smile design technology allows your dentist to show you what your smile might look like after treatment, helping you understand what’s possible and ensuring you’re aligned on the goal.

Timeline and Realistic Expectations

Gum contouring produces immediate results, though some swelling resolves over a few weeks and the final appearance becomes clear after complete healing.

Orthodontia takes longer, typically 18 months to 3 years depending on how much tooth movement is needed.

Lip repositioning produces results that become apparent as swelling resolves over a few weeks.

Setting realistic expectations is important. If your gummy smile is caused by a small amount of excess gum, gum contouring might give you excellent results. If it’s caused by significant jaw overgrowth, you might not be able to completely eliminate gum showing, but you can reduce it significantly.

Your Smile Goals Matter

The motivation for addressing a gummy smile is purely aesthetic. Your gums are healthy and fine; you’re simply wanting to adjust the proportion of gum showing to tooth showing in your smile.

Some patients are bothered by their gummy smile and want it fixed. Others don’t think about it. There’s no obligation to change anything. If you’re considering addressing it, the key is making sure you understand what’s realistic and what approach will work best for your particular anatomy.

Taking the First Step

At Bonin Dental Care in Windsor, Dr. Bonin focuses on cosmetic dentistry that addresses gummy smiles. If you’ve been self-conscious about showing too much gum when you smile, a consultation can clarify what’s causing it and what options exist to address it.

Dr. Bonin works with patients to understand their goals and design a treatment plan that’s realistic and effective. Whether gum contouring, orthodontia, or a combination approach is best for you, we’ll guide you through the process. Contact us today to schedule your consultation and explore your options.

Learn more about the author Dr. Scott Bonin

Written by

Dr. Scott Bonin, DDS

General and cosmetic dentist at Bonin Dental Care in Windsor, California. USC School of Dentistry graduate, Navy veteran, and member of the American Dental Association, California Dental Association, and American Academy of Cosmetic Dentistry. Over 24 years of clinical experience serving Sonoma County families.

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Clinical note: This article is for educational purposes and does not replace a professional examination. Every patient's situation is unique. If you have questions about your specific dental health, please schedule an appointment or call (707) 838-1400.