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  • 1 Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, HR-10000 Zagreb, Croatia
  • | 2 Department of Prosthetic Dentistry, School of Dentistry, University of Zagreb, Gundulićeva 5, HR-10000 Zagreb, Croatia
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Knowledge of the composition of an incorporated alloy is a precondition for avoiding polymetallism in subsequent prosthetic treatment, or detection of the cause of an allergic reaction attributed to a metallic component of the prosthesis restoration. The method proposed in this paper can be a very useful means of determining the presence of Ni–Cr or Co–Cr dental alloys, and, especially, beryllium in Ni–Cr alloys which, despite its toxicity, gives the alloy desirable properties. Nickel is also a well-known allergen. This paper reports an analytical procedure for detection and identification of cobalt-and nickel-based dental alloy components. The method involves anodic sampling, and separation and identification of the components by thin-layer chromatography on precoated microcrystalline cellulose layers. Computer-assisted optimization was used to choose the mobile-phase composition. Excellent detection and identification of nickel, chromium, cobalt, molybdenum, and beryllium, on the basis of different RF values and spot colors, was achieved after anodic sampling in-situ.

Microanodic dissolution of dental alloys enables intra-oral, in-situ, and almost non-destructive sampling of a permanent prosthesis restoration.

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Journal of Planar Chromatography - Modern TLC
Language English
Size A4
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Founder Akadémiai Kiadó
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Springer Nature Switzerland AG
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Chief Executive Officer, Akadémiai Kiadó
ISSN 0933-4173 (Print)
ISSN 1789-0993 (Online)

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