When a tooth is fractured, has a large old filling, or is severely damaged by decay, we may recommend the placement of a tooth crown. Crowns strengthen and protect the remaining tooth structure and can improve the appearance of your smile.
In cases when there is not enough tooth structure to retain a crown due to decay or fracture, additional procedures may be considered prior to crown placement. These may include root canal therapy, post and core build up, or crown lengthening.
In order to achieve a good fit between a crown and your tooth, at least 2 to 3 millimeters of original tooth structure must be present above the jaw bone. If there is not enough of tooth structure available, a surgeon may expose more of the tooth structure by lowering the jaw bone level around a tooth. This procedure allows
sufficient vertical height of tooth structure that will be grasped by the future crown.
The graphic to the right presents the before and after depiction of the crown lengthening procedure.