Crown Lengthening: Procedure, Recovery, Cost & Why It’s Done

Editorially reviewed by the Dental.me Editorial Team · Updated July 2026

Crown lengthening is a periodontal procedure that removes or reshapes gum tissue, and often a small amount of the underlying bone, to expose more of a tooth. Despite the name, it does not make a tooth grow. Instead it uncovers more of the natural tooth that is already there, either to give a dentist enough structure to place a restoration or to reveal more of the visible tooth in a smile. It is performed by a periodontist or a general dentist with surgical training, usually under local anesthesia, and it can involve a single tooth or several at once. Understanding why it is recommended, and the difference between its functional and cosmetic uses, helps you weigh whether it is the right step for your mouth.

What Crown Lengthening Actually Is

Every tooth sits in a socket surrounded by gum and bone. Where the gum meets the tooth, there is a small band of soft tissue and bone attachment that dentists call the biologic width. This attachment protects the tooth from bacteria and must be respected whenever a crown or filling is placed. If a restoration crowds too close to it, the gum stays inflamed, sore, and prone to recession.

Crown lengthening lowers the gum line, and where necessary the bone level, so that more solid tooth structure is exposed above the gum. This gives a dentist room to work while keeping a healthy margin of attachment intact. The soft-tissue and bone reshaping is what separates true crown lengthening from a simple gum trim, and it is why the procedure is planned carefully rather than done on a whim.

Why Crown Lengthening Is Done

There are two very different reasons a dentist may recommend crown lengthening, and it is worth being clear which one applies to you because it changes both the goal and how the cost is handled.

Functional or restorative reasons

The most common reason is functional. When a tooth breaks at or below the gum line, has deep decay near the gum, or fractures with little healthy structure remaining, there may not be enough tooth above the gum to hold a crown or a large filling. The dentist needs more exposed tooth to grip a restoration and to keep it away from the biologic width. By recontouring the gum and bone, crown lengthening turns a tooth that seemed unrestorable into one that can support a lasting dental crown procedure. It is also used to reach decay hidden below the gum so a clean, sealed margin can be created.

Cosmetic reasons

The second reason is cosmetic. Some people have teeth that look short because the gums cover too much of them, producing a gummy smile or an uneven gum line where some teeth appear longer than others. Cosmetic crown lengthening removes excess gum, and sometimes a little bone, to reveal more of the tooth and create a more balanced, symmetrical smile. It is often part of a broader cosmetic dentistry plan and is one of the recognized ways to fix a gummy smile.

How It Differs From Gum Contouring

Crown lengthening and gum contouring are often confused because both change the shape of the gum line, but they are not the same procedure. Gum contouring, also called gingivoplasty, is usually a soft-tissue-only reshaping. It trims and recontours the gum without touching the bone and heals quickly. Crown lengthening more often involves reshaping the bone that sits beneath the gum, because the bone level, not just the gum, determines how much tooth can safely be exposed.

That bone work is why crown lengthening carries a longer healing period and, in restorative cases, a wait before the final crown is placed. If your only concern is a slightly uneven or excessive gum line with healthy bone underneath, simple gum contouring may be all you need. When a tooth needs a restoration or the bone level has to change, crown lengthening is the correct tool.

The Procedure Step by Step

The procedure is done in a dental or periodontal office and typically takes under an hour for a single tooth, longer for several. The general sequence is:

• The area is numbed with local anesthesia. Sedation is available for anxious patients but is not usually required.
• The dentist gently lifts the gum away from the tooth to see the tooth and the bone underneath.
• Excess gum tissue is removed, and where needed a small amount of bone is reshaped so the right amount of tooth is exposed while the biologic width is preserved.
• The gum is repositioned and closed with sutures. Some dentists use a laser instead of a scalpel, which can reduce bleeding and speed soft-tissue healing.
• A temporary crown or dressing may be placed to protect the tooth while it heals.

For cosmetic cases across the front teeth, the dentist plans the new gum line carefully so the result looks even and natural, often using a guide based on the ideal proportions of each tooth.

Recovery and Aftercare

Most people feel soreness and mild swelling for a few days after crown lengthening, controlled with over-the-counter pain relievers or a prescription your dentist provides. Stitches are usually removed or dissolve within one to two weeks. While the surface heals within days, the gum and bone need several weeks to fully settle, often around two to three months, before a permanent crown is fitted in restorative cases. This is why a temporary restoration is common in the meantime.

Good aftercare protects the result:

• Eat soft foods for the first several days and chew away from the treated area.
• Keep the area clean but gentle. Brush carefully and avoid vigorous rinsing right after surgery.
• Use a warm salt-water rinse after the first day to soothe the tissue and lower infection risk, if your dentist advises it.
• Avoid smoking, which slows gum and bone healing.
• Attend the follow-up visit so the dentist can check healing before final restoration.

Risks, Cost, and Whether It Is Worth It

Crown lengthening is a well-established and generally safe procedure, but it has trade-offs. Because more of the tooth, and sometimes a bit of root, is exposed, you may notice temporary sensitivity to hot and cold. The tooth can look longer than before, which is the goal in cosmetic cases but worth expecting in functional ones. Minor gum recession, bleeding, and, rarely, infection are possible. On front teeth, an experienced clinician plans the case to keep the result symmetrical.

Cost varies with how many teeth are treated, whether bone is reshaped, and whether a periodontist performs it. A single-tooth functional case is usually a few hundred to around a thousand dollars, and multi-tooth cosmetic work runs higher. When crown lengthening is medically necessary, for example to save a broken or decayed tooth, dental insurance often covers part of it. Purely cosmetic crown lengthening is typically paid out of pocket. Ask for a written estimate and a pre-treatment insurance check before you commit.

Is it worth it? For a functional case, crown lengthening is often what makes it possible to keep a natural tooth instead of extracting it, which is almost always preferable to losing the tooth. For a cosmetic case, it can meaningfully improve a smile, though it is worth comparing it with alternatives such as veneers or crowns. Reviewing veneers vs crowns with your dentist helps you decide whether reshaping the gum, covering the teeth, or a combination gives the best outcome for your situation.

Who Performs It and When to Consider Alternatives

Crown lengthening is performed by periodontists, who specialize in the gums and supporting bone, and by general dentists with the right surgical training. If your case involves multiple front teeth or significant bone reshaping, a periodontist is often the safest choice. Your general dentist can refer you and coordinate the final restoration afterward.

It is not the only option. Minor cosmetic gum excess may be handled with laser gum contouring alone. In some restorative situations, a technique called orthodontic extrusion can pull a tooth slightly up out of the socket to expose more structure without surgery. And when too little healthy tooth remains even after lengthening, extraction followed by an implant or bridge may be the more durable plan. A thorough exam, including X-rays to assess the bone, is the only way to know which path fits your tooth. If you are weighing your options, use dental.me to find an experienced dentist or periodontist near you and ask specifically about their experience with crown lengthening.

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