Sažetak sa skupa
Biocorrosion Behavior of High Noble Au-Pt Dental Alloy in Different Solutions and pH Values
Maja Baučić
Ivo Baučić
Asja Čelebić
Jasmina Stipetić
E. Prohić
S. Miko
Sažetak
Corrosion stability and biocompatibility are basic factors for oral use of dental alloys. The aim of this study was to analyse the release of metal ions from Gold/platinum (Au/Pt) dental alloy in the different conditions that may be found in the oral cavity.Gold/platinum (Au/Pt) dental alloy was exposed in vitro to either simulated saliva (Saliva; phosphate buffer pH 6.0), highly acidic medium resembling the extreme conditions in the oral cavity (Acid; phosphate buffer pH 3.5), and in lactic acid at pH which occurs under the dental plaque (Plaque, lactic acid pH 3.5). The alloy was immersed in the Saliva, Acid, and Plaque solution for 1, 2, 3, 4, 5, 6, 7, 14, 21, and 30 days. The solution was analyzed for fifteen metals with the ICP-AES.
The results revealed time and solution dependent leaching of Zn, Cu, Fe, and Cr (ANOVA, p<0.01 for solution, time, and interaction comparison). Chromium and iron were not declared in the Au/Pt dental alloy. Undeclared ions (eg. Cr) may be responsible for the allergy attributed to gold.
Ključne riječi
Hrčak ID:
3056
URI
Datum izdavanja:
15.9.2003.
Posjeta: 1.494 *