A dental crown is a cap placed over a damaged or decayed tooth to restore its shape, size, strength, and appearance. Crowns can be made from various materials, including porcelain, metal, or a combination of both. They are often used after a root canal treatment or to support a dental bridge. The process of getting a crown typically involves two visits to the dentist. During the first visit, the tooth is prepared, and an impression is taken to create a custom crown. In the second visit, the crown is fitted and cemented in place, providing protection and improving the tooth's function.