The "crown" of a tooth is that part that is above the gums. Sometimes more of the tooth below the gums must be exposed to fill a cavity near the gumline or place a new crown on a broken tooth. "Crown lengthening" provides more tooth structure for this to be done. This helps to ensure that the general dental procedure is successful and prevents gum irritation.
Procedure: Your periodontist administers a local anesthetic and gently recontours excess gum and bone tissue to expose more of your natural tooth.