Crown lengthening: what it is, who needs it, recovery, and cost

Crown lengthening is a small gum procedure that exposes more of a tooth so a dental crown has something solid to hold on to. When a tooth is cracked, worn, or decayed down to or below the gumline, there may not be enough healthy tooth above the gum to support a dental crown. The dentist gently reshapes the gum, and sometimes a little bone, to uncover the sound tooth underneath. A smaller number of cases are cosmetic. It is usually done in the office in one visit with the area numbed, and because the gum keeps settling for about three months, the final crown often waits.

Want to know whether your tooth needs it? Call Neola Dental at (352) 717-2177 or schedule a visit. A short exam and an X-ray answer the question.

What is crown lengthening?

The name is a little misleading. Your tooth is not made longer. What changes is how much of it shows above the gum. The dentist moves the gumline up, and sometimes lowers the edge of the bone slightly, so more of the tooth that was already there becomes visible and reachable.

Dental literature splits the procedure by purpose. Functional crown lengthening exposes decay or a fracture below the gum, or makes room so a restoration does not crowd the tissue around it. Esthetic crown lengthening refines the gumline on front teeth. A 2024 review in the journal Cureus describes both types.

At our office, most cases are functional: a tooth needs a crown, and the crown needs a place to land. Read more on our crown lengthening service page.

Why a crown needs healthy tooth above the gum

The American Dental Association describes a crown as a cover that restores a tooth's shape and size and protects a weak tooth. It fits over the tooth like a cap and holds on by gripping the structure beneath it. With little structure above the gum, a crown is more likely to loosen or come off.

There is a second issue, and it involves the gum. The gum and bone attach to the tooth in a band of tissue that should stay undisturbed, known as biologic width or supracrestal tissue attachment. If the edge of a crown or filling invades that space, the gum can become inflamed and bleed, and the bone can slowly wear away.

Crown lengthening solves both problems. It uncovers enough sound tooth for the crown to grip, and it moves the crown margin away from the attachment so the gum can stay healthy. A review in the Journal of the American Dental Association states that, for teeth with subgingival decay or fractures, the procedure can establish biological width and create the ferrule, the rim of tooth a crown wraps around, needed for restoration.

Who needs crown lengthening?

Most people who come to us for this have one of a few situations.

A tooth broken at or below the gumline. When a tooth snaps off level with the gum, there may be nothing left to hold a crown. If the root is sound, lengthening can sometimes make the tooth restorable.

Decay that extends below the gum. A cavity under the gumline is hard to clean out and seal, because the gum bleeds and gets in the way.

A crown margin that irritates the gum. An older restoration that sits too close to the bone can leave the gum red and sore no matter how well you brush.

A tooth that needs a root canal and a crown. After root canal therapy, most back teeth need a crown. If the tooth is broken down low, lengthening may be part of the plan.

Crown lengthening for a gummy smile: one cosmetic use

Crown lengthening is also used cosmetically. Some people feel their smile shows too much gum. When the cause is gum tissue that sits low on the teeth, reshaping the gumline can make the teeth look longer and more balanced. The JADA review notes this use in cases of delayed passive eruption, where the gum stays higher on the tooth than it should after the teeth come in.

A gummy look has several possible causes, including the gum, the bone, the upper lip, and the position of the jaw. Crown lengthening addresses only the gum and bone. It does not suit every gummy smile, and an exam has to confirm what is behind yours first.

How we decide if you need it

The decision starts with a visit, not a surgery date. We examine the tooth, measure the gum, and take an X-ray to see the bone and root. We want to know how much healthy tooth sits above the gum, how close the planned crown edge comes to the bone, and whether the root is worth saving.

If the tooth cannot be saved, we say so and talk about replacing it. If it can be saved without crown lengthening, we say that too. As a privately owned, non-corporate practice, the dentist who examines you makes that call with you, not a sales target. Some complex cases are better handled by a gum specialist, and if yours is one, we will tell you plainly.

What happens during the procedure

Crown lengthening is done in the office. First, the area is numbed with a local anesthetic.

Next, the dentist makes a small incision along the gum, lifts it back, and reshapes the gum edge. When bone sits too close to the planned crown edge, a small amount is reshaped too so the gum has room to attach in a healthy position. Lasers are mainly used on soft tissue, so the right tool depends on whether bone also needs to change.

Finally, the gum is repositioned and held with small stitches, sometimes with a protective dressing. You go home the same day.

Does crown lengthening hurt?

Not during the procedure, because you are numb. Afterward the area is tender for a few days and swelling is common. Most people describe it as sore rather than sharp, and it improves daily. Cold compresses on the outside of the cheek help in the first day or two. Call us if pain worsens, or if you notice a bad taste, fever, or pus.

Crown lengthening recovery timeline

Healing varies, and your dentist's instructions come first.

The first few days. Expect tenderness, mild swelling, and a little oozing. Stick to soft foods and keep the area clean as instructed.

One to two weeks. The gum surface is closing, and stitches that do not dissolve usually come out around now.

One to three months. The gum looks healed, but underneath it is still maturing. The JADA review reports that an average of about three millimeters of gum tissue can rebound toward the crown, and that the gum margin takes at least three months to reach its final position.

Three to six months. The same review advises waiting at least three months, and possibly up to six in areas where looks matter most, before starting the final prosthetic work. That is why we often place a temporary crown first, so you can chew and smile while the gum finishes healing.

For what comes after the crown is placed, see our guide on dental crown recovery.

What affects the cost of crown lengthening?

We will not print a price here, because any number given without an exam would be a guess. These are the factors that move the cost.

• How many teeth are involved. One tooth is a smaller procedure than several in a row.
• Whether bone must be reshaped. Soft tissue only is simpler than soft tissue plus bone.
• Functional or cosmetic purpose. Dental plans often treat these differently, and plan rules vary, so we check your benefits with you before treatment.
• Whether the crown is part of the same plan. Lengthening is usually one step in a larger treatment. Our guide to dental crown cost in Minneola explains the crown side.
• Comfort options. Extra sedation, if you choose it, changes the total.

We work with major PPO plans and with Medicare Advantage plans that include dental benefits. Details on how to pay for treatment are on our payment options page.

Alternatives to crown lengthening

Crown lengthening is not the only way to handle a short or broken tooth. Ask about each of these.

Deep margin elevation. The dentist builds up the edge of the tooth with composite resin, bringing the margin up out of the gum so the crown can be placed. A 2022 review in the journal Medicina calls it a minimally invasive alternative to surgical crown lengthening and orthodontic extrusion with respect to biological width, and adds that long-term clinical trials are still limited.

Orthodontic extrusion. Braces or a similar appliance slowly pull the tooth upward out of the gum and bone. It takes longer and involves orthodontic care.

Biological shaping. This technique aims to maintain the attachment while removing little or no supporting bone. A 2024 review in Clinical and Experimental Dental Research describes it as a conservative alternative to traditional crown lengthening.

Extraction and replacement. When a tooth cannot be restored, removing it and replacing it may be the better long-term answer.

Risks, and what before and after photos do not show

Like any gum procedure, crown lengthening has risks. Swelling and soreness are expected. Less common problems include infection, more bleeding than expected, and cold sensitivity on the newly exposed root. The tooth can also look longer afterward, which is why front teeth call for careful planning. The JADA review also notes that removing bone could affect periodontal stability and may rule out the procedure in some cases.

People often search for before and after photos. In a functional case, the biggest change is not in the mirror: a tooth that could not be restored can now be crowned. In a cosmetic case the change is more visible, but photos of another mouth do not predict yours.

When to schedule an evaluation

Do not wait if a tooth has broken near the gumline, a filling or crown has come loose, or you have a sore, swollen gum next to an old restoration. A tooth that is fixable today can become unsavable if decay keeps going.

We are at 825 US-27 #104 in Minneola, and we see patients from Clermont, Groveland, Winter Garden, Mascotte, Montverde, and across Lake County. Our staff is bilingual in English and Spanish, and Dr. Josaida Contreras will walk you through your options. Call (352) 717-2177 or schedule an appointment online.

Frequently asked questions about crown lengthening

What is crown lengthening?

Crown lengthening is a minor gum procedure that exposes more of a tooth above the gumline. The dentist reshapes the gum and, when needed, a little bone. The most common reason is to give a crown enough healthy tooth to hold on to. It can also be cosmetic, once an exam confirms it fits your anatomy.

Is crown lengthening painful?

The area is numbed, so you should not feel pain during the procedure. Afterward, tenderness and some swelling are normal for the first several days, and soft foods help. Follow the pain relief your dentist recommends, and call us if pain worsens after the first few days instead of easing.

How long is recovery after crown lengthening?

The gum feels better within a week or two but keeps settling. A review in the Journal of the American Dental Association found the gum margin needs at least three months to reach its final position, and up to six in smile-critical areas. So the final crown often waits for that window, with a temporary crown in between.

How much does crown lengthening cost?

It depends on how many teeth are involved, whether bone must be reshaped, where the tooth sits, and whether your plan treats it as functional or cosmetic. We cannot quote a fair number without an exam. Call (352) 717-2177 and we will explain cost and payment options at a consultation.

Do I always need crown lengthening before a crown?

No. It is only needed when there is not enough healthy tooth above the gumline for the crown to grip, or when the crown edge would sit too close to the bone. Many teeth have plenty of structure, and some suit other options like deep margin elevation. An exam and X-ray tell us which fits.

Sources

• Hempton TJ, Dominici JT. Contemporary crown-lengthening therapy: a review. Journal of the American Dental Association, 2010
• Qali M, Alsaegh H, Alsaraf S. Clinical Considerations for Crown Lengthening: A Comprehensive Review. Cureus, 2024
• Aldakheel M, et al. Deep Margin Elevation: Current Concepts and Clinical Considerations: A Review. Medicina, 2022
• Alrmali A, et al. Biological shaping as a conservative alternative for crown lengthening: A review. Clinical and Experimental Dental Research, 2024
• American Dental Association, MouthHealthy - Crowns