کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1239570 1495681 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Distribution of toxic elements in teeth treated with amalgam using μ-energy dispersive X-ray fluorescence
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Distribution of toxic elements in teeth treated with amalgam using μ-energy dispersive X-ray fluorescence
چکیده انگلیسی


• Quantitative evaluation of heavy metals in teeth treated with amalgam fillings
• Dissemination of Hg onto the teeth and settlement in the pulp chamber
• Up to 4% Hg in some teeth;

Over the years, the presence of mercury in amalgam fillings has raised some safety concerns. Amalgam is one of the most commonly used tooth fillings and contains approximately 50% of elemental mercury and 50% of other metals, mostly silver, tin and copper. Amalgam can release small amounts of mercury vapor over time, and patients can absorb these vapors by inhaling or ingesting them. In this study, 10 human teeth treated with dental amalgam were analyzed using energy dispersive X-ray fluorescence (EDXRF) to study the diffusion of its constituents, Ag, Cu, Sn and Hg. The used EDXRF setup, makes use of a polycapillary lens to focus radiation up to 25 μm allowing the mapping of the elemental distribution in the samples. Quantification was performed using the inbuilt software based on the Fundamental Parameters method for bulk samples, considering a hydroxyapatite matrix.The teeth were longitudinally cut and each slice was scanned from the surface enamel to the inner region (dentin and pulp cavity). Mercury concentration profiles show strong levels of this element close to the amalgam region, decreasing significantly in the dentin, and increasing again up to 40,000 μg·g− 1 in the cavity were the pulp used to exist when the tooth was vital.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 122, 1 August 2016, Pages 114–117
نویسندگان
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