What is crown lengthening, and why would you need it?

Maybe your dentist has said a damaged tooth needs more to work with before it can be repaired. Or maybe your teeth look short, with gum covering more of them than you’d like. Crown lengthening is gum surgery that reshapes the gumline, and sometimes the bone beneath it, to expose more of the tooth.¹ It doesn’t make the tooth itself longer, and a dental provider can explain whether it fits your situation. 

What you will learn in this article: 

• Crown lengthening can help expose tooth structure needed for a repair. 

• It can also change excess gum coverage that makes teeth look short. 

• The procedure may involve gum tissue alone or include bone reshaping. 

• Feeling better after surgery is different from being ready for a final crown. 

To understand why this procedure may be part of your care, schedule an appointment with an Aspen Dental provider to review your treatment options. 

Why would you need crown lengthening? 

Crown lengthening mainly serves one of two goals, making a tooth easier to restore or changing how it looks.¹ Knowing which goal applies to you helps explain why the procedure is being considered. 

How can crown lengthening help repair a tooth? 

A tooth may break, wear down or develop decay below the gumline. That can leave too little healthy tooth exposed for a repair. Crown lengthening can give your dentist access to more of the tooth and create room between a planned crown and the supporting bone, which lets the gum attach in a healthy way.¹ 

The procedure is one part of the repair plan. It does not replace a filling or crown, and it does not mean every damaged tooth can be saved. 

Can crown lengthening change a gummy smile? 

Sometimes teeth look short because extra gum tissue covers them. Crown lengthening may expose more of the natural tooth and change an uneven gumline. It’s a recognized option for these concerns.² You can discuss how much change you want without assuming that showing gum is itself a health problem. 

Crown lengthening vs. dental crown: What's the difference? 

A dental crown is a cap placed over a tooth to restore or protect it. Crown lengthening changes the tissues around the tooth. The names sound similar, but the treatments do different jobs. 

They may be used together when more tooth needs to be exposed before a crown can be fitted. Needing a crown does not automatically mean you need gum surgery. For more about the restoration itself, see Aspen Dental's guide to ceramic crowns. 

What happens during crown lengthening? 

Planning starts with the tooth and the tissues that support it. A review of crown-lengthening techniques describes how the gum tissue, bone level and root shape help determine the approach. Some cases need gum removal or repositioning alone. Others also need bone reshaping to leave suitable space around the tooth.³

This is why crown lengthening is more than trimming the gumline to a chosen height. The surgical plan needs to account for the tissue that will remain and the tooth's support. You should know whether bone removal is planned and what the procedure is meant to make possible. 

If more than one provider is involved, clarify who will perform the surgery, who will check healing and who will complete any restoration. 

What is recovery like after crown lengthening? 

Recovery happens in stages. Your care team will explain how to keep the site clean, manage discomfort and adjust eating while it heals. Follow the instructions for your procedure, including any directions about medicines and activity. 

Before leaving, make sure you know: 

• How to clean around the treated area 

• Which foods to choose or avoid 

• What symptoms should prompt a call 

• When to return for a healing check 

There is also a difference between feeling comfortable again and having tissue that is ready for the next treatment. Gum position can change during healing, and the time needed for it to settle depends on the surgical approach. Bone reshaping can mean a longer wait before the final result can be assessed.³ 

If you need a crown or filling afterward, your provider will plan that step around healing. A follow-up visit is a chance to review both your comfort and whether the site is ready. Ask for an expected schedule, while allowing for changes based on what the exam shows. 

What should you consider before crown lengthening? 

The decision involves more than how much tooth can be uncovered. Surgery can also leave too little root support or affect neighboring teeth in some cases. A tooth that cannot be restored is not made repairable simply by exposing more of it.³ 

Appearance matters too, especially near the front of your mouth. Discuss how the treated tooth may look beside its neighbors and whether further dental work is part of the plan. You should also understand the alternatives, expected costs and purpose of each appointment before proceeding. 

To discuss whether crown lengthening fits your needs, schedule an assessment with your local dental provider and review the proposed treatment plan. 

What is crown lengthening, and why would you need it? FAQs 

Does crown lengthening hurt? 

Your provider will explain how the area will be numbed and kept comfortable during treatment. Tell your provider if you feel pain so they can address it. Before surgery, discuss how discomfort will be managed afterward and any worries you have about the procedure. 

Who performs crown lengthening? 

Periodontists are dentists with additional training in the gums and the bone that supports teeth, and they often perform this procedure.¹ Your dental provider may refer you to one. Confirm who will perform your procedure and how they will coordinate with the provider handling any later restoration. 

Will insurance cover crown lengthening? 

Check the benefits for your specific treatment plan rather than assuming coverage. Ask for a written estimate and confirm with your insurer what you would owe. If a crown or other repair is also planned, make sure the estimate accounts for that separate treatment. 

Sources 

¹ American Academy of Periodontology: “Crown Lengthening.” https://home.perio.org/PRODUCTFILES/8118845/CrownLengthening_sample.pdf 

² American Academy of Periodontology: “Cosmetic Procedures.” https://www.perio.org/for-patients/periodontal-treatments-and-procedures/cosmetic-procedures/ 

³ National Institutes of Health, Cureus: “Clinical Considerations for Crown Lengthening: A Comprehensive Review.” https://pmc.ncbi.nlm.nih.gov/articles/PMC11614317/