Fillings and crowns are common examples of curative care performed by general dentists. Fillings are used to repair a tooth that has suffered a cavity, has cracked, broken, or become worn down. In this case, the doctor will remove the damaged portion of the tooth and fill the area using a material such as gold, porcelain, silver amalgam, or composite resins. Crowns are used to restore the natural appearance of the tooth but also help to protect the tooth from becoming more damaged. A crown is a little cap that fits over the damaged tooth and will cover the entire visible part of the tooth.