Gummy Smile Treatment: Botox, Laser, or Crown Lengthening?

A gummy smile can be treated with Botox, laser gum contouring, or crown lengthening, and the best option depends on why your gums show. Botox relaxes an overactive upper lip for a temporary lift, laser contouring and crown lengthening reshape excess gum tissue for a longer-lasting change, and in some cases a lip or jaw procedure is the better fit. A short exam at Carlmont Dental Care in Belmont is what pins down the cause so you don't pay for a treatment that targets the wrong problem.

What actually causes a gummy smile?

Dentists describe a gummy smile as "excessive gingival display." Showing a millimeter or two of gum when you smile is completely normal and often considered ideal; most people only start to feel self-conscious once more than about three millimeters of gum is on display. The reason it happens varies from person to person, and that reason is what determines the fix:

• A hyperactive or short upper lip that rises too far when you smile. This is the single most common contributor.
• Altered passive eruption, where the gums never finished receding off the teeth during development, leaving teeth that look short even though they're a normal length underneath.
• Vertical maxillary excess, meaning the upper jaw is a bit long, which exposes more gum.
• Gum overgrowth, sometimes triggered by certain medications.

Often more than one factor is at play, which is why an accurate diagnosis matters more than picking a trendy treatment.

Botox: the non-surgical, temporary option

When the culprit is an overactive upper lip, a small amount of botulinum toxin can be placed in the muscles that lift the lip. This relaxes the pull just enough so the lip doesn't ride as high when you smile, letting less gum show. Results typically appear within a few days and then fade over the following months as the effect wears off, so treatment needs to be repeated to maintain the look.

Botox is appealing because there's no cutting and essentially no downtime. The trade-offs: it's temporary, it does nothing for excess gum tissue or a long jaw, and it works best for mild cases driven by lip movement. Think of it as a reversible way to test the waters before committing to something permanent.

Laser gum contouring and crown lengthening: reshaping the gums

If your teeth look short because gum tissue is covering them, physically reshaping the gumline is the answer. There are two related approaches:

Laser gum contouring

A dental laser trims and sculpts excess gum tissue to reveal more of each tooth. Research on laser-assisted, minimally invasive techniques reports low levels of post-treatment pain and swelling, quick recovery, and high patient satisfaction, with many patients returning to normal eating within a day or so. The laser also seals tissue as it works, which helps limit bleeding.

Crown lengthening

When the underlying bone sits too high, simply trimming gum isn't enough, because the tissue can grow back. Crown lengthening reshapes both the gum and a small amount of bone to create a stable, balanced gum-to-tooth ratio. It's a slightly bigger procedure with a healing period of a couple of weeks, but the results are designed to last.

Both are excellent matches for altered passive eruption. The right one depends on whether bone needs to be adjusted, which your dentist at Carlmont Dental Care can assess with a clinical exam and imaging.

When lip or jaw procedures are the better answer

For a hyperactive lip where you'd prefer a lasting result over repeat Botox, a lip repositioning procedure limits how far the upper lip lifts. Published follow-ups show meaningful, generally stable reductions in gum display, though a portion of the improvement can ease slightly over the first year. When a gummy smile stems from a genuinely long upper jaw, orthodontics or, in more pronounced cases, jaw surgery may be the appropriate path. These are less common but important to rule in or out, because no amount of gum trimming or Botox will correct a skeletal cause.

Common questions about gummy smile treatment

Q: Which treatment is permanent?

Crown lengthening and laser contouring are designed for lasting results, and lip repositioning is largely stable over time. Botox is temporary and needs to be repeated to maintain the effect.

Q: Does treating a gummy smile hurt?

Botox involves only tiny injections. Laser and minimally invasive gum procedures are done with local anesthesia, and patients often report modest, short-lived soreness rather than significant pain. We'll review comfort options with you beforehand.

Q: How do I know which one I need?

It comes down to the cause — lip, gum tissue, bone, or jaw. That's exactly what a consultation is for, and often a combination of approaches gives the most natural outcome.

Q: What does gummy smile treatment cost?

Cost depends on the technique, the number of teeth involved, and case complexity, so we provide a written estimate after your exam. Bay Area pricing reflects materials and experienced clinical care, and we sit toward the higher end locally. To make treatment manageable, we offer in-house membership plans starting at $30 per month and 0% APR financing through CareCredit and Proceed Finance.

Q: Will insurance cover it?

Purely cosmetic gum reshaping usually isn't covered, but some procedures have a functional or health component that a PPO plan may consider. We accept most PPO plans and are happy to help you understand your benefits.

Talk it through with our team

The smartest first step isn't choosing a treatment — it's finding out what's actually causing your gummy smile so the plan fits you. If you're in Belmont, San Carlos, San Mateo, or anywhere across San Mateo County, our team at Carlmont Dental Care is glad to take a look and walk you through your options. Call (650) 591-1984 or visit carlmontdentalcare.com to schedule a consultation.