Esthetics and materials.
D000180:Acrylic Resins; D003723:Dental Amalgam; D003764:Dental Materials; D003776:Dental Porcelain; D004955:Esthetics, Dental; D006047:Gold Alloys; D006801:Humans; D012823:Silicate Cement
D000180:Acrylic Resins; D003764:Dental Materials; D006047:Gold Alloys; D003776:Dental Porcelain; D012823:Silicate Cement; D003723:Dental Amalgam