Sažetak sa skupa
Quantity Evaluation of the Release of Heavy Metal Ions; Voltamperometric Study
M. Urbanek-Brychczynska
W. Hedzelek
W. Wasiak
Sažetak
In recent years there has been an decrease in the use of non-precious casting alloys in dentistry. These materials offer many physical, chemical and financial advantages. In order to achieve the necessary mechanical and physical properties, the alloys often contain metals which are known to be biologically active. We have continued and expanded our research into the release of these heavy
metal ions by concentrating on the processes that occur when two different alloys are together in the same environment. The aim of this study was to evaluate and compare the influence of one, two or three different non-precious alloys on the degree of release of the selected ions, which are their components. An analysis of the alloys Remanium G-Weich, Remanium CS and Remanium GM 380 was made both individually or in combinations of two samples, which were
prepared from these alloys. One of the metal samples was prepared in the laboratory in the shape of a cylinder from Cr-Ni, Cr-Co, Ag-Pd. The size of the samples, their shape, length and weight were matched. These elements were placed in an incubator of a definite time of permeability and 25 ml of the artificial saliva at a temperature of 37° C was poured. They were then transferred to an incubator at the same temperature and left for 1, 2 ,4, 6, 7 and
30 days, after which the released ions Cr, Co, Ni were evaluated by means of inversion voltamperometry.The amount of nickel released into the artificial saliva from chrom-nickel alloys in combination with silver-palladium alloy was increased. The release of chromium and
cobalt was detected and depended on the proportion of these ions in the alloy compositions. Exact results are given in tables and diagrams.
Ključne riječi
Hrčak ID:
10239
URI
Datum izdavanja:
15.9.2002.
Posjeta: 734 *