title: Copper release from dental prosthetic crowns, dental materials, and human teeth into acetic acid.
abstract: This article examines the dilution of the ion of copper from human teeth and dental prosthetic crowns in 4% CH(3)COOH during a period of 24 hr at room temperature. The content of the diluted copper in an acetate extract, as well as the overall content of this metal in the samples, was determined by means of a potentiometric stripping analysis. The comparative measurements were carried out using the furnace atomic absorption spectrophotometry technique, which is recommended by the International Standards (ISO 6872:2008; ISO 24234:2004) as a method for quality control of dental-prosthetic material (dental ceramic, metal restorative materials, dental amalgams) in the process of checking for heavy metals. During a 24-hr period in 4% CH(3)COOH at a temperature of 25 degrees C, approximately 72% of the overall copper was released from the tooth. The percentage of the released copper from baby teeth is higher, ranging from 88 to 92%, which is probably a consequence of the bone tissue being in development, its infirmity, and inadequate stability. On these conditions, approximately 72% of the overall copper was released from the dental-ceramic prosthetic crowns.
authors.affiliation: Faculty of Medicine, Department of Pharmacy, University of Nis, Nis, Serbia. bkalicanin@yahoo.com
authors.forename: Biljana M
authors.initials: BM
authors.lastname: Kalicanin
authors.forename: Ruzica S
authors.initials: RS
authors.lastname: Nikolić
mesh_terms: D019342:Acetic Acid / Q000737:chemistry*; D000328:Adult; D002516:Ceramics / Q000737:chemistry / Q000506:poisoning; D002648:Child; D003300:Copper / Q000737:chemistry* / Q000506:poisoning; D003442:Crowns / Q000009:adverse effects*; D003764:Dental Materials / Q000737:chemistry / Q000506:poisoning; D003776:Dental Porcelain / Q000737:chemistry* / Q000506:poisoning; D003793:Dental Restoration, Permanent / Q000009:adverse effects; D006801:Humans; D008422:Materials Testing; D011199:Potentiometry / Q000379:methods; D013054:Spectrophotometry, Atomic / Q000379:methods; D013499:Surface Properties; D014070:Tooth / Q000737:chemistry* / Q000378:metabolism; D019231:Tooth Preparation, Prosthodontic / Q000379:methods; D014094:Tooth, Deciduous / Q000737:chemistry / Q000378:metabolism
chemical_list: D003764:Dental Materials; D003776:Dental Porcelain; D003300:Copper; D019342:Acetic Acid