Crown lengthening (or crown exposure) is necessary when your tooth needs a new crown or restoration. Generally this procedure is needed when the restoration is deep below the gum line and not accessible or too close to the bone. During the procedure, the level of the gum tissue will be adjusted to allow us to reach the edge of the restoration and create a perfect fit for the new restoration. It should also create enough tooth structure so the new restoration will not come loose in the future, and enable you to clean the full restoration to prevent decay and gum disease. When the procedure is complete, sutures will be placed, and you will need to return in one or two weeks to remove the sutures and evaluate your healing.