Crown lengthening

Crown lengthening removes a small amount of gum, and sometimes bone, to expose more of a tooth. Dentists usually refer patients for it when a tooth is broken or decayed below the gum line and needs more surface for a crown or filling to hold.

When it's needed

• A tooth has broken off at or below the gum line
• Decay extends under the gum
• A crown keeps coming loose because there isn't enough tooth to grip
• Gums cover too much of the teeth, giving a "gummy" smile (see cosmetic gum surgery)

What to expect

The procedure takes about an hour under local anesthetic. The gums need around 6 to 12 weeks to settle before your dentist makes the final crown, so they can match it to the new gum line.

Questions we hear often

How long until I can get my crown?

Typically 6 to 12 weeks, depending on whether the tooth is in a visible area. We coordinate timing with your dentist.