Dental crowns can repair extensively decayed or damaged teeth. Dental crowns can be made of gold metals, silver metals, porcelain or a combination of porcelain and metal. Some dentists use CAD/CAM technology for the fabrication of dental crowns. In some cases, conservative dental veneers may replace the need for a dental crown. General dentists, family dentists, prosthodontists, pediatric dentists and cosmetic dentists may perform the crown procedure; however, expertise varies among dentists.