In situ analysis of human teeth by external PIXE

Rautray, Tapash R.; Das, Saubhagyalaxmi; Rautray, Alekh C.

doi:10.1016/j.nimb.2010.01.004

Cited by 24 publications

(13 citation statements)

References 28 publications

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“…The Cs + ions are accelerated to the negatively biased cold cathode, which then sputter out negative ions from cathode materials. Multiple cathodes of same or different materials can be mounted at the same time in the cathode disk in a pelletron accelerator [44][45][46][47][48]. In general, ion beam currents are functions of cathode composition, cathode potential, cesium ion flux and cathode temperature [43].…”

Section: Ion Sourcementioning

confidence: 99%

Ion implantation of titanium based biomaterials

Rautray

Narayanan

Kim

2011

Progress in Materials Science

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270

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Section: Ion Sourcementioning

confidence: 99%

Ion implantation of titanium based biomaterials

Rautray

Narayanan

Kim

2011

Progress in Materials Science

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270

136

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“…Therefore, standard samples should have matrices as similar as possible to those of the specimen (in this case, human enamel). Use of hydroxyapatite as the matrix for the standard sample decreased the "matrix effect" compared with use of the National Institute of Standards and Technology (NIST) bone ash standard, which was used as the standard sample in a previous PIXE analysis of trace elements in human teeth 31) . The standard materials with a higher Sr content showed a wider range of Sr/Cu counts during micro-PIXE.…”

Section: Discussionmentioning

confidence: 99%

“…Qualitative and quantitative analyses of elements on the target surface are possible by measuring the discharged gamma rays or X-rays 30) . This multi-elemental, nondestructive technique has excellent sensitivity across a wide range of atomic numbers 31) . Its detection limit is the parts-permillion range 30) .…”

Section: Introductionmentioning

confidence: 99%

A new technique for analyzing trace element uptake by human enamel

et al. 2015

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Fluorine (F) and strontium (Sr) are key elements in the de-and remineralization of teeth. To quantitatively analyze the distribution of F and Sr, micro-particle-induced gamma/X-ray emission (PIGE/PIXE) technique was used. The cavities were prepared and filled with the fluoride-and Sr-containing restorative materials (FSCMs) in extracted human molars. The single-section enamel specimens were prepared by slicing from the buccal to lingual surface including the FSCMs. After 5 weeks of automatic pH cycling, the demineralization was calculated by integrated mineral loss (ΔIML) from transverse-microradiography. The distributions of F and Sr were analyzed by the PIGE/PIXE technique. The micro-PIGE/PIXE technique indicated a fluorine uptake difference between the enamel surface and enamel cavity wall. ΔIML of FSCMs were significantly lower than intact enamel. The micro-PIGE/PIXE technique enables measurement of F and Sr uptake from FSCMs into enamel, which would be beneficial for research on caries development and prevention.

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“…The PIXE mapping showed evidence of heterogeneous lateral distributions of mineral particles with diameters of 3.2–32 μm for Ca, 20–60 μm for Zr, <4 μm for Ba, and 10–50 μm for Yb. Rautray et al also measured human teeth by external PIXE. They found that the respective concentrations of elements such as P, Ca, Fe, Zn, and Pb in enamel were greater than those in cementum.…”

Section: Applicationsmentioning

confidence: 99%

X-ray Spectrometry

et al. 2011

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I n this Review, we focus on the most significant and essential progress in X-ray spectrometry (XRS) published during the period from January 2010 to August 2011 covering developments and improvements in X-ray optics, X-ray detectors, new quantification models in X-ray spectra and data evaluation, micro-X-ray fluorescence (micro-XRF) including 3D X-ray fluorescence (3D-XRF), elemental imaging techniques, electron probe microanalysis (EPMA), total reflection X-ray fluorescence (TXRF), particle-induced X-ray emission (PIXE) analysis, and X-ray absorption spectrometry (XAS). Herein, we focus on X-ray spectrometry, and thus, X-ray radiography used for only investigating inside structure images and X-ray diffraction (XRD) is not covered. However, we will introduce articles including combinations of these X-ray imaging techniques and other spectroscopic techniques. In addition, different applications in each subfield of XRS, including sample preparation, standard materials, energy-dispersive XRF (ED-XRF), and wavelength-dispersive XRF (WD-XRF), are described. We attempt to look over the current trends in this analytical field by critically citing selected papers to support the research activity of the community of X-ray scientists.Since the previous review on XRS in Analytical Chemistry, an international group of scientists published two overviews on XRS 1,2 in the Journal of Analytical Atomic Spectrometry covering the main fields of XRS analytical spectroscopic methods and instruments. These review articles involve all of the important sections of XRS in nine chapters: reviews, instrumentation, spectrum analysis, matrix correction and calibration, X-ray optics and micro fluorescence, synchrotron radiation (SR), TXRF, portable and mobile X-ray fluorescence (XRF), and online XRF and applications. The section on applications is categorized into geological and industrial minerals, environmental, archeological, cultural heritage, forensic science, etc. These review articles are useful, especially for an overall look at recent XRS research activities.The second edition of the book, "Elements of Modern X-ray Physics", was published. 3 It provides excellent explanations of the basics of X-ray physics, interactions with matter, X-ray sources,

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In situ analysis of human teeth by external PIXE

Cited by 24 publications

References 28 publications

Ion implantation of titanium based biomaterials

Ion implantation of titanium based biomaterials

A new technique for analyzing trace element uptake by human enamel

X-ray Spectrometry

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