What does crown lengthening involve?
Crown lengthening is normally performed under local anesthetic. The amount of time this procedure takes will largely depend on how many teeth are involved and whether a small amount of bone needs to be removed along with the soft tissue. Any existing dental crowns will be removed prior to the procedure and replaced immediately afterward.
Your dentist will make a series of small incisions around the soft tissue in order to separate the gums away from the teeth. Even if only one tooth requires the re-contour, neighboring teeth are usually treated to provide a more even reshaping. Separating the gums provides your dentist with access to the roots of the teeth and the underlying bone.
In some cases, the removal of a small amount of tissue will provide enough tooth exposure to place a crown. In other cases, your dentist will also need to remove a small amount of bone from around the teeth. The bone is usually removed using a combination of special hand instruments, and rotary instruments. The rotary instruments roughly resemble the drill that is used in cavity treatment.