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Proton μ‐PIXE mapping, AFM imaging and size statistics of mineral granules in a dental composite by Eugen A. Preoteasa; Elena Preoteasa; Livia Harangus; Antoniu Moldovan; Maria Dinescu; Dieter Grambole; Folker Herrmann is a Physics and Astronomy article available to read on EtoBox.
What is Proton μ‐PIXE mapping, AFM imaging and size statistics of mineral granules in a dental composite about?
## Abstract We applied proton microbeam particle‐induced X‐ray emission (μ‐PIXE) for mapping Ca, Zr, Ba and Yb, and atomic force microscopy (AFM) for imaging the surface landscape of a dental composite which releases Ca^2+^ and F^−^ for the protection of hard dental tissues. Three areas ∼250 × 250 μm^2^ located ∼0.5–2 mm apart on a smooth surface specimen were mapped with 3.1 MeV protons focused to a ∼3.0 μm spot and at ∼3.9 μm pixel size sampling. The maps evidenced particles with diameters of 3.2–32 μm (Ca), 20–60 μm (Zr), ≤ 4 μm (Ba) and 10–50 μm (Yb). Cross‐section area histograms of Ca‐rich particles fitted with 2–6 Poisson functions revealed a polydisperse size distribution and substantial differences from an area to another, possibly implying large local variations of Ca^2+^ released in the hard tissue near a dental filling of a few millimeters in diameter. Such imbalances may lead to low local Ca^2+^ protection of the dental tissue, favoring the onset of secondary caries. Similarly, AFM images showed high zone‐dependent differences in the distributions of grains with apparent diameters of 1–4 μm, plausibly recognized as Ca‐ and Ba‐containing particles. In a simple model bas
Who reads Proton μ‐PIXE mapping, AFM imaging and size statistics of mineral granules in a dental composite?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Eugen A. Preoteasa; Elena Preoteasa; Livia Harangus; Antoniu Moldovan; Maria Dinescu; Dieter Grambole; Folker Herrmann
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0049-8246)
- Published
- 2010
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)