A gummy smile, called excessive gingival display in clinical notes, is a smile that shows more gum tissue above the upper teeth than the person wants it to. A smile can look gummy for reasons that have nothing to do with the gums, which is why the term describes an appearance rather than a diagnosis. The point at which a smile starts to look gummy is a question of proportion rather than a fixed measurement.
What matters more is this: there are six separate causes, they are not variations of one another, and each responds to a different treatment. A gum procedure corrects one of them. Performed on the wrong cause, it produces long teeth and the same amount of gum showing.
So the question worth asking is not how to fix a gummy smile in general. There are several ways to fix a gummy smile and they have very little in common with one another. The cause of your gummy smile is what decides which treatment option is the right one.
What Counts As A Gummy Smile
Most people show a narrow band of gum above the upper teeth during a full smile, and that is normal. Around 2mm or less is generally regarded as ideal. Above roughly 3 mm to 4 mm of gum display, a smile line starts to read as gummy to most observers.
A gummy smile occurs when that band widens far enough that the gums, rather than the teeth when you smile, are the first thing anyone notices. Where the line falls varies from person to person, and every smile is read against the face around it.
Those figures describe averages rather than a diagnosis. A smile that shows gum and is otherwise well balanced does not need treating because it exceeds a number, and smile aesthetics are not settled with a ruler.
Is A Gummy Smile A Health Problem?
In most cases, no. Excess gum display is a cosmetic characteristic rather than a disease, and it has no bearing on oral health.
Two exceptions are worth naming. Where the gums are enlarged because of gum disease or a medication reaction, that is a health issue and needs treating regardless of how it looks. And where teeth have not erupted fully, the reason is worth understanding rather than covering over.
Otherwise this is elective. The honest reason to correct a gummy smile is that it bothers the person who has it.
What Causes A Gummy Smile
The causes of gummy smile fall into three groups: the gum itself, the teeth and bone beneath it, and the lip above it.
Altered passive eruption. The teeth are a normal length but the gum never finished migrating up them during development, so it still covers part of the crown of each tooth. The teeth look short and square even though tooth length underneath is normal, and short teeth make the gums look more prominent than they really are. This is the most common cause treated in a periodontal practice, and the most common reason for excess gum tissue showing.
A hyperactive upper lip. The upper lip muscles lift further than average during a smile, exposing gum that would otherwise stay covered. At rest the smile looks entirely normal. This is a matter of lip movement, not of gum or tooth.
A short upper lip. The same effect from a different source. The lip is shorter than average, so more gum shows even without excessive movement.
Vertical maxillary excess. The upper jaw has grown longer than average, carrying teeth and gums lower in the face. This is a question of jaw alignment rather than gum, it is skeletal, and no amount of gum surgery changes it.
Dentoalveolar extrusion. The upper front teeth, along with the bone holding them, have over-erupted. It often follows tooth wear, where the body compensates for shortened teeth by pushing them further down.
Gingival enlargement. The gum tissue itself has overgrown. Excessive gum tissue of this kind is sometimes called gingival hyperplasia. It arises from gum disease, from certain medications, or occasionally during orthodontic treatment when cleaning around each tooth becomes difficult. Calcium channel blockers such as nifedipine and amlodipine are the best known culprits, along with the anticonvulsant phenytoin and the immunosuppressant ciclosporin. Where a drug is responsible, the overgrowth itself is the thing to treat and it will recur if the medication question is left unaddressed.
More than one cause can be present at once, which is common, and is the main reason the assessment matters more than the procedure. Two people with an identical gummy look can need entirely different treatment approaches.
Matching The Treatment To The Cause
| Cause | What Treats It |
|---|---|
| Altered passive eruption | Gingivectomy or crown lengthening, depending on where the bone sits |
| Gingival enlargement | Treat the cause first, then reshape the gum if needed |
| Hyperactive or short upper lip | Botox, repeated as needed. Lip repositioning surgery is an option, though it commonly relapses in gummy smile cases |
| Dentoalveolar extrusion | Orthodontic treatment, often using temporary anchorage devices to intrude the teeth |
| Vertical maxillary excess | Orthognathic surgery, which needs a surgeon with maxillofacial training |
The best treatment is chosen depending on the cause rather than on preference, and some causes need expertise beyond periodontics. Where that applies, patients are told so at the consultation rather than after treatment, and Laser Smile Solutions makes sure the right people are involved in the plan. Treatment is often a single procedure, though where more than one cause is present the plan may address the whole smile in stages.
Gum Contouring, Gingivectomy And Crown Lengthening
Where the cause is tissue covering a tooth of normal length, this is where results are most predictable. It is also the situation most people picture when they ask what causes a gummy smile.
The distinction between the two procedures is about the bone, not the gum. Where there is enough space between the bone and the position the new gum line needs to sit at, removing gum tissue to expose more of each tooth is enough on its own, and that is a gingivectomy. Where the bone sits too high, it has to be reshaped as well, or the tissue simply grows back to re-establish the distance the body requires. That second procedure is crown lengthening. Getting the judgment wrong is the most common reason a cosmetic gum procedure disappoints, and it is why the assessment involves measuring rather than looking.
Either procedure is done under local anesthetic in a single visit. A laser handles the soft tissue work in most cases, which is less invasive than a scalpel and means less bleeding, usually no stitches, and a more comfortable recovery.
Botox And Lip Repositioning For A Gummy Smile
Where the cause is lip movement rather than gum or bone, neither gum contouring nor crown lengthening helps, because the gum and teeth are already where they should be.
Botox is provided at Laser Smile Solutions for this cause. Botulinum toxin injected into the hyperactive upper lip muscles weakens the lift slightly, so less gum shows during a smile. The effect appears within about two weeks, the appointment takes minutes, and no surgery is involved. The limitation is duration: Botox injections last roughly three to four months, after which the effect fades and has to be repeated.
Lip repositioning surgery reaches a comparable result through surgical correction rather than injection, by adjusting the tissue inside the upper lip so it limits how far the lip can rise. Laser Smile Solutions has performed lip repositioning, more often in the past than now, and generally prefers Botox for this cause.
The reason is relapse. Where a gummy smile is what is being treated, lip repositioning tends not to hold. The lip usually creeps back up over time, not always to where it started, but far enough that the result fades and a second procedure comes into question.
That is worth stating plainly, because most pages on this subject present lip repositioning as the permanent answer and Botox as the temporary compromise. For gummy smile that is often backwards. Repeating an injection sounds like the larger commitment right up until it is weighed against a surgical result that may not last either. Which of the two suits a given patient depends on how much the lip moves, how much gum shows, and whether regular appointments or the chance of relapse is the easier thing to accept.
What Gummy Smile Treatment Costs
Gummy smile treatment cost depends entirely on which procedure the case needs, and the range across the options is wide. National published figures give a reasonable idea of what to expect:
- Gum contouring or gingivectomy runs about $200 to $500 per tooth
- Crown lengthening runs about $800 to $3,000 per tooth, with soft tissue work at the lower end and cases needing bone reshaping at the upper
- Botox for a gummy smile runs about $300 to $600 per treatment, repeated every three to four months
- Orthodontic treatment and orthognathic surgery sit well above both, and are quoted case by case
Lip Repositioning Surgery Cost
Lip repositioning surgery cost is published nationally at roughly $500 to $5,000, which is a wider spread than most dental procedures carry. The reason is that the figure depends heavily on how much correction is needed and whether a gingivectomy is performed alongside it.
The number that matters more is the one over time. A single lip repositioning surgery costs more than a single Botox appointment and less than several years of them. Set against a relapse rate that is high for this particular cause, the arithmetic is closer than the headline figures suggest, which is why it is worth discussing the two together rather than choosing on price.
Cosmetic treatment for gum display is not usually covered by insurance. Where gum enlargement is caused by disease or medication, the periodontal treatment often is.
Do Children Outgrow A Gummy Smile?
Often, yes, and that is the reason not to rush.
Passive eruption continues through the teenage years, and gum covering part of the teeth at fourteen may have receded to a normal position by nineteen with no treatment at all. Treating too early risks correcting something that would have been resolved on its own, and risks a result that no longer suits the face once growth finishes. Late teens is the earliest sensible point, and later still where the jaw is involved, since jaw growth has to be complete before any skeletal treatment is planned.
What The Assessment Involves
Working out which cause applies is mostly measuring and watching.
It covers how much gum tissue is visible during a full smile rather than a posed one, the length of each tooth to establish whether it is genuinely short or only partly covered, how far the upper lip travels between rest and a full smile, and the relationship between the upper teeth and the face. X-rays show where the bone sits relative to the teeth, which determines whether removing gum alone would hold.
It takes one appointment, and it is the part that decides whether the outcome is good. From it comes the treatment plan, including where gum contouring would sit alongside veneers or crowns if restorative work is also planned.
Frequently Asked Questions
Can A Gummy Smile Be Fixed Without Surgery?
Sometimes. Gummy smile surgery is not the only route. Botox corrects a hyperactive upper lip with no surgery at all, and orthodontic treatment addresses over-erupted teeth. Where gum tissue is covering the teeth, a procedure is needed, though laser gum contouring is minor and done in one visit.
How Long Does Gummy Smile Treatment Take?
A gum procedure is one visit, with the tissue settling over a few weeks. Botox takes minutes and shows its effect within about two weeks. Orthodontic approaches take months, and jaw surgery is longer still.
Will The Results Last?
Gum and bone reshaping is permanent where the right procedure was chosen for the right cause. Botox lasts three to four months and is repeated. Lip repositioning commonly relapses where a gummy smile is the reason for doing it. Orthodontic and skeletal corrections are permanent.
Can Veneers Fix A Gummy Smile?
Not on their own, since veneers change the teeth rather than the gum line. In cosmetic dentistry they are often placed after gum contouring, once the proportions are right.
Can An Orthodontist Fix A Gummy Smile?
Where the cause is tooth position, yes. Braces or clear aligners can intrude over-erupted front teeth, often with temporary anchorage devices. Where the cause is gum tissue, bone or lip movement, orthodontics will not change it.
Can Gummy Smile Botox Go Wrong?
The usual complaint is an uneven or flattened smile from too much product or placement slightly off target. It resolves as the effect wears off over three to four months, which is the practical advantage of a treatment that is not permanent. Starting conservatively and adding at a review appointment avoids most of it.
Does Fixing A Gummy Smile Improve Oral Health?
Usually not, because in most cases nothing is wrong. The exception is gum enlargement from disease or medication, where treatment does improve gum health.
Who Treats A Gummy Smile?
It depends on the cause, which is why the assessment comes first. Gum and bone are a periodontist’s work. Tooth position is orthodontic. Jaw proportions need a surgeon with maxillofacial training. Any clinician who names the treatment before measuring is guessing.
Schedule A Consultation
If your smile shows more gum than you would like, the first useful step is finding out why, not booking a procedure. There is no single way to correct a gummy smile, because the appearance can come from tissue, teeth, lip or jaw, and the right treatment depends on which. The treatment used has to match the cause, and the plan should be one that fits your smile rather than a standard package.
Call (212) 843-4311 or schedule a consultation online. Consultations are free.