Crowns are a cosmetic restoration used to improve a tooth’s shape or to strengthen a tooth. They are most often used for teeth that are broken, worn, or for which tooth decay has destroyed portions of the teeth. A crown is a cap cemented onto an existing tooth. The crown usually covers the portion of the tooth above the gum line. In effect, it becomes your tooth’s new outer surface. Crowns can be made of porcelain, metal, or both. Porcelain crowns are most often preferred because they mimic the translucency of natural teeth and resist wear and fracture. Crowns are needed when there is insufficient tooth strength remaining to hold a filling. Unlike fillings, your crown is created in a lab from your unique tooth impression, which allows a dental laboratory technician to examine all aspects of your bite and jaw movements. Your crown is then sculpted just for you so that your smile can look natural, your bite feels perfect, and your mouth feels strong and healthy.