What Is Crown Lengthening?
Crown lengthening is a crown lengthening surgery that reshapes the gum tissue and underlying bone around a natural tooth. The goal is to expose more tooth structure so it can support a dental crown, bridge, or other restoration. Without enough exposed tooth structure, a dental crown cannot grip the natural tooth properly and is more likely to fail.
The crown lengthening procedure is performed by a periodontist who specializes in the gums and bone that support your teeth and oral health. Your general dentist will refer you to a periodontist when there is not enough tooth structure above the gum line to work with.
Restorative Crown Lengthening Procedure
The most common reason for crown lengthening surgery is restorative. When a natural tooth breaks at or below the gum line, or when tooth decay extends deep beneath the gum tissue, your dentist may not have enough solid tooth structure to attach a dental crown. The crown lengthening procedure creates the space needed.
This follows a principle called biologic width, which is the minimum amount of gum tissue and bone that must surround a healthy natural tooth. Placing a dental crown too close to the bone leads to chronic inflammation and failure of the restoration, which is why crown lengthening surgery to expose more tooth structure is essential for long-term oral health.
Cosmetic Crown Lengthening (Gummy Smile Correction)
Some people have teeth that appear short because excess gum tissue covers a significant portion of the tooth structure. This is commonly called a gummy smile. The crown lengthening procedure reshapes the gum line to reveal more of the natural tooth, creating a more balanced appearance.
Cosmetic crown lengthening surgery often involves several neighboring teeth across the front of the mouth to create a symmetrical gum line. The periodontist carefully plans how much tissue to remove so the neighboring teeth look proportional and natural.
When Is Crown Lengthening Surgery Needed?
Crown lengthening is needed when there is not enough tooth structure above the gum line to support a dental crown or restoration. Your dentist will assess whether the remaining natural tooth meets the minimum requirements.
- A natural tooth has broken at or below the gum line and cannot hold a dental crown without exposing more tooth structure.
- Deep tooth decay extends beneath the gum tissue, and your dentist needs access to remove the decay and place a filling or dental crown.
- A previous dental crown has come off because there was too little tooth structure to grip.
- You have a gummy smile and want to improve the proportions of your teeth and gum line.
- Tooth decay or damage near the gum line on neighboring teeth requires better access for restoration.
How the Crown Lengthening Procedure Is Performed
Crown lengthening surgery is an outpatient procedure performed in the periodontist's office. It typically takes 30 to 60 minutes, depending on how many teeth are involved and whether bone around the natural tooth needs to be reshaped.
Before Crown Lengthening Surgery
Your periodontist will take X-rays and examine the natural tooth, neighboring teeth, and surrounding gums. If the crown lengthening procedure is being done to prepare for a dental crown, your general dentist may place a temporary crown first so the periodontist can see exactly where the gum line needs to be adjusted.
During the Crown Lengthening Procedure
The area is numbed with local anesthesia. The periodontist makes small incisions in the gum tissue to create a flap, then gently lifts the gum away from the tooth structure and bone. Excess gum tissue is removed to lower the gum line. If bone removal is needed, the periodontist uses specialized instruments to reshape the bone around the natural tooth. The gums are repositioned and stitched into place.
A periodontal dressing may be placed over the surgical site to protect it while gums heal during the first week.
Recovery Timeline: How Gums Heal After Crown Lengthening
Recovery from crown lengthening surgery is typically straightforward, but you need to wait for gums to heal fully before a permanent dental crown can be placed.
Days 1 Through 7
Swelling peaks around day 2 or 3, then gradually improves. Apply ice packs in 20-minute intervals for the first 48 hours. Eat soft foods and avoid chewing near the surgical area. Do not brush or floss the treated gum line until your periodontist says it is safe, usually at the one-week follow-up visit. As gums heal during this phase, some sensitivity around the natural tooth and neighboring teeth is normal.
Weeks 2 Through 4
Stitches are removed at 7 to 14 days. As gums heal and the tissue matures, you can gradually return to normal eating. Avoid hard or crunchy foods directly on the area. Sensitivity to hot and cold is common because more tooth structure and root surface is now exposed above the gum line.
Weeks 4 Through 6 and Beyond
Most periodontists ask patients to wait at least 6 weeks after gums heal, and sometimes up to 3 months, before placing the final dental crown. Placing a temporary crown too soon can result in a poor fit if the gum line shifts during healing. Once gums heal fully, your general dentist takes new impressions and fabricates the permanent dental crown.
Crown Lengthening Cost and Insurance
The crown lengthening procedure typically costs between $1,000 and $3,000 per natural tooth. The total depends on the number of neighboring teeth treated, whether bone removal is required, your location, and the periodontist's experience.
Dental insurance often covers crown lengthening surgery when it is medically necessary to restore a natural tooth affected by tooth decay. Most plans cover 50% to 80% of the cost after your deductible. Cosmetic crown lengthening to correct a gummy smile is generally not covered.
Risks and Potential Complications
Crown lengthening surgery is a common and generally safe procedure, but like any surgery, it carries some risks to consider for your oral health.
- Infection at the surgical site, though uncommon when aftercare instructions are followed and gums heal properly.
- Prolonged sensitivity because more tooth structure and root surface is exposed after the crown lengthening procedure.
- Uneven gum line if tissue heals asymmetrically, which may need a minor touch-up.
- The natural tooth may appear longer than neighboring teeth after functional crown lengthening surgery on a single tooth.
- In rare cases, bone removal during crown lengthening may affect the support of neighboring teeth.
Who Performs Crown Lengthening Surgery?
Crown lengthening is performed by a periodontist, a dentist who has completed 3 additional years of residency training in treating gums, bone, and the structures that support your natural teeth and oral health. Periodontists handle the majority of crown lengthening procedures, especially when bone reshaping around tooth structure is involved.
For cosmetic cases where the gum line across neighboring teeth is adjusted, choose a periodontist experienced in esthetic gum surgery for the best results.
Find a Periodontist Near You
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