Gum Contouring: How a Gummy Smile Is Fixed
A gummy smile has several possible causes, and the cause decides the fix. How gum contouring, crown lengthening, injections, lip surgery and orthodontics compare.
When you smile, you notice more gum than tooth. Maybe your teeth look short or square, or your top lip seems to rise higher than other people's. You may have seen that a quick laser appointment can fix it, and wondered whether that applies to you.
Sometimes it does. But a gummy smile, meaning a smile that shows more gum above the upper teeth than you would like, can come from several different places: the gum, the lip, the teeth, or the jaw. The right treatment depends entirely on which one it is, and getting that wrong is the most common reason people end up disappointed or needing a second procedure.
Here is how to tell the causes apart, what each treatment involves, and what recovery and costs look like.
What Counts as a Gummy Smile
There is no strict line. Dentists often use a rule of thumb that showing more than about 3 to 4 millimeters of gum above the upper front teeth in a full, natural smile is where many people start to see it as gummy. But plenty of people with more gum showing love their smile, and some with less do not. How it looks to you matters, and so does whether the gum line is even, because an uneven gum line often bothers people more than the amount of gum.
A gummy smile is not a health problem in itself, and treatment is a choice. The exception is gum that has recently become puffy, red, or bleeds easily, or that seems to be growing over the teeth. That is a health issue to have checked first, before any cosmetic plan.
Why the Cause Decides the Fix
Think of your smile as three layers: the lip that draws back, the gum that frames each tooth, and the jaw bone the teeth sit in. Any of them can be responsible, and often more than one is.
Extra gum covering the teeth
In some people, the gum never fully moves back to its usual position after the adult teeth come in. This is called altered passive eruption, which simply means the gum, and sometimes the bone beneath it, stayed too far down the tooth. The teeth are a normal length, but part of each one is hidden, so they look short and square. This is the situation gum contouring was designed for.
Gum overgrowth
Gums can also enlarge. Inflammation from plaque does it, especially around braces. Certain medicines can too, including some drugs for epilepsy, some blood pressure drugs known as calcium channel blockers, and drugs that suppress the immune system after a transplant. This is a health issue first: the inflammation needs treating and, if a medicine is involved, your doctor may be able to suggest an alternative. Never stop a prescribed medicine on your own. If your gums have changed recently, read about the early signs of gum disease and book a dental visit before thinking about cosmetic work.
A lip that lifts too far, or a short lip
Some upper lips are hypermobile, meaning the muscles that raise the lip pull it higher than average when you smile. The teeth and gums may be completely normal. Other people have a naturally short upper lip, which shows more gum even at rest. Cutting gum away will not fix either of these, and can leave the teeth looking too long.
Upper jaw growth
When the upper jaw has grown further downward than usual, called vertical maxillary excess, the whole row of teeth and gum sits lower in the face. You often see gum even with the lips relaxed, and the lower part of the face can look long. This is a skeletal issue, and a lasting fix works at the level of the bone.
Teeth that have moved down, or worn short
Upper front teeth can over-erupt, drifting downward and bringing the gum with them, often alongside a deep bite. Teeth worn down by grinding can also look short, with the gum and bone following them down. In both cases, the teeth themselves are part of the answer.
How a Dentist Works Out the Cause
A good assessment usually takes one visit and includes:
- Photos, and sometimes video, of your face at rest and smiling, to see how far the lip moves
- Measuring how much tooth shows with your lips relaxed, and how long your upper lip is
- Measuring the visible length and width of the front teeth
- Probing under the gum to find where the enamel ends and where the bone sits, often with x-rays or a 3D scan
That last step matters most for gum contouring. The gum needs a small zone of attachment above the bone to stay healthy. If the bone sits too close to the edge of the enamel, simply trimming gum will not last, because the gum tends to grow back toward its old position. In that case the bone needs reshaping too.
Many gummy smiles have more than one cause, so a plan combining two treatments is common. If you are also thinking about veneers or whitening, plan everything together, because the gum line sets the frame for the teeth. Our guide to the smile makeover design process explains how that sequencing usually works.
Treatment Options, Cause by Cause
| Cause | Usual treatment | How long it lasts | Typical cost range |
|---|---|---|---|
| Extra gum over normal length teeth, bone in the right place | Gum contouring with a laser or scalpel | Long lasting in most cases | $500 to $3,000 for the upper front teeth |
| Extra gum, bone too close to the enamel | Crown lengthening, reshaping gum and bone | Long lasting | $1,500 to $5,000 for the upper front teeth |
| Gum overgrowth from inflammation or medicine | Treat the inflammation, discuss the medicine with your doctor, then trim gum if needed | Depends on keeping the cause under control | From routine cleaning costs of $75 to $250 upward |
| Lip that lifts too far | Muscle relaxing injections | About 3 to 6 months per treatment | $200 to $600 per session |
| Lip that lifts too far, longer term option | Lip repositioning surgery | Long lasting, some partial relapse is possible | $1,500 to $5,000 |
| Upper front teeth that have drifted down | Braces or aligners, sometimes with small anchor screws | Stable if you wear a retainer as advised | $3,000 to $8,000 |
| Upper jaw grown too far down | Orthodontics plus jaw surgery | Permanent | $20,000 to $50,000 or more, including hospital fees |
| Short or worn teeth | Crown lengthening plus veneers or crowns | Veneers and crowns eventually need replacing | $900 to $2,500 per tooth, plus any gum work |
These are ranges, not quotes. Where you live, who does the work, how many teeth are involved, the materials used, and whether you need sedation all move the numbers. Treatment done purely for appearance is rarely covered by dental insurance. Crown lengthening needed to restore a damaged tooth sometimes is, and jaw surgery may be partly covered by medical insurance when there is also a problem with how your jaws function.
What Each Treatment Involves
Gum contouring
Also called a gingivectomy, meaning removal of excess gum tissue. It is done under local anesthetic, usually in a single visit. The dentist marks the new gum line, then removes and shapes the extra tissue with a soft tissue laser or a scalpel. Both can give good results. Lasers seal small blood vessels as they go, so there is often less bleeding and no stitches. The planning and skill matter more than the tool.
Crown lengthening
Also under local anesthetic, but more involved. The gum is gently lifted, a small amount of bone is reshaped so the new gum line has room to sit, and the gum is stitched in its new position. It is often done by a periodontist, a dentist who specializes in gums.
Muscle relaxing injections
Small doses of botulinum toxin placed in the muscles that raise the upper lip weaken their pull, so the lip does not rise as high. The appointment takes minutes, results appear over a week or two, and they fade over several months. Too much can make a smile look flat or uneven, so a cautious first dose is sensible. Rules about which professionals may give these injections vary by state.
Lip repositioning
A strip of tissue is removed from inside the upper lip and the lip is stitched to limit how far it can rise. There is no outside scar. It suits hypermobile lips, and the effect can relax somewhat over time.
Orthodontics and jaw surgery
Braces or aligners can move over-erupted front teeth upward, often helped by small temporary screws in the bone that act as anchors. If you are weighing up which appliance suits you, the aligners vs braces comparison tool sets out the trade-offs. For true jaw overgrowth, orthodontics prepares the teeth, then an oral and maxillofacial surgeon moves the upper jaw up in a hospital operation. It is a major undertaking, and it is usually only chosen when there are also bite or facial balance concerns.
Recovery: What to Expect
After gum contouring, most people go back to work the next day. Expect tenderness for a few days, and the gum may look red or whitish while it heals. Over the counter pain relief is usually enough. Eat soft, lukewarm food, skip spicy, crunchy and very hot food for several days, and brush the area gently with a soft brush. Your dentist may suggest a salt water or prescription rinse. The gum keeps settling for several weeks, and final veneers or crowns are usually delayed until it has stabilized.
Crown lengthening takes longer. Expect more swelling in the first few days, stitches that come out after a week or two, and a gum line that needs roughly three months or more to settle around front teeth before final restorations are made.
After injections, follow the aftercare you are given, which usually means not rubbing the area for the rest of the day. After lip repositioning, expect a tight, swollen lip and limited smiling for a week or two.
Call your dentist promptly if you have bleeding that does not stop with firm pressure, swelling that increases after the third day, a fever, or pain that is getting worse rather than better.
Frequently Asked Questions
Is gum contouring painful?
The procedure is done under local anesthetic, so you should feel pressure rather than pain. Afterward, most people describe soreness for a few days that over the counter pain relief handles. Crown lengthening is usually sorer, because bone is involved.
Will my gums grow back after contouring?
If the cause was correctly identified and the bone level was checked, the result is usually long lasting. Gum tends to creep back when the bone sat too close to the enamel and was not reshaped, or when plaque inflammation was not brought under control first. That is why a careful assessment beforehand matters.
Can I fix a gummy smile without surgery?
Sometimes. Muscle relaxing injections help when the lip is the cause, though they need repeating. Orthodontics can help when the teeth themselves have drifted down. If extra gum is covering your teeth, removing it is the only way to reveal more tooth.
Does insurance cover gum contouring?
Rarely, when it is purely cosmetic. It may be covered when gum needs removing for a health reason, such as overgrowth, or when crown lengthening is needed so a damaged tooth can be restored. Ask your dentist to send a pretreatment estimate to your insurer before you commit.
Is laser gum contouring better than a scalpel?
Not necessarily. A laser often means less bleeding and a quicker early recovery, but the result depends mainly on the planning and the skill of the person doing it. If bone needs reshaping, a laser alone is usually not enough.
What to Do Next
Before booking a quick fix, find out why your smile shows more gum. Ask for an assessment that looks at your lip, gums, teeth and bone, and ask directly: "What is causing my gummy smile, and how do you know?" A dentist who measures, photographs and probes before recommending anything is a good sign.
If your gums are swollen, bleeding, or have changed recently, deal with that first. And if you are planning veneers or other cosmetic work as well, settle the gum line before anything else, so the rest of your smile is built around it.
This article is for general information only and is not a substitute for professional dental advice. Always consult your dentist about your individual needs.
