In-air micro-PIGE measurement system for fluorine analysis of the tooth

Yasuda, Keisuke; Hai, Vo Hong; Nomachi, M.; Sugaya, Y.; Yamamoto, Hiroko

doi:10.1016/j.nimb.2007.02.109

Cited by 16 publications

(10 citation statements)

References 10 publications

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“…The beam spot size was less than 10 µm, with a beam current of approximately 50 pA. The nuclear reaction 19 F(p, αγ) 16 O was used to measure the fluoride content. The gamma rays in this reaction were detected using a 3''bismuth germanium oxide detector, located just behind the sample stage.…”

Section: Measurements Of Calcium and Fluoride Distributions And Concentrations Before Demineralizationmentioning

confidence: 99%

“…We found that PIXE/PIGE potentially offers a useful and advantageous technique for studying caries development in combination with conventional techniques such as TMR and µCT. The in-air micro-PIXE/ PIGE system allows for qualitative and quantitative analyses of calcium and fluoride simultaneously, by measuring the intensities of characteristic X-ray and gamma rays generated by the bombardment of teeth with protons [18][19][20] . One of the reasons for the efficiency and precision of the PIXE/PIGE system is that its beam spot is very small (1 µm), which enables a high-resolution analysis of the distributions of each mineral element in In-air micro-proton-induced X-ray/gamma-ray emission analysis of the acid resistance of root dentin after applying fluoride-containing materials incorporating calcium dentin.…”

Section: Introductionmentioning

confidence: 99%

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In-air micro-proton-induced X-ray/gamma-ray emission analysis of the acid resistance of root dentin after applying fluoride-containing materials incorporating calcium

et al. 2021

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This study employed an in-air micro-proton-induced X-ray/gamma-ray emission system to assess the effectiveness of fluoridecontaining materials (FCMs) incorporating calcium in preventing root caries. Dentin surfaces of human third molars were coated with one of three FCMs: fluoride-releasing glass-ionomer cement (F7) and experimental materials in which half (P1) or all (P2) of the strontium in F7 was replaced with calcium. Dentin without FCM coating served as the control. Specimens were immersed in saline at 37°C for 1 month, sectioned, and then demineralized. Calcium loss after demineralization was lower in the Ca-substituted groups than in the Ca-unsubstituted groups (p<0.05). Calcium loss was negatively correlated with fluoride uptake (p<0.01). In the F7, P1, and P2 groups, the retraction of the dentin surface was significantly suppressed as compared with the control group. FCMs incorporating calcium improved the acid resistance of root dentin and could help prevent root caries.

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Section: Measurements Of Calcium and Fluoride Distributions And Concentrations Before Demineralizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In-air micro-proton-induced X-ray/gamma-ray emission analysis of the acid resistance of root dentin after applying fluoride-containing materials incorporating calcium

et al. 2021

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“…El tamaño del haz depende de la distancia hacia la muestra, de la energía y del gas aislante. La instrumentación debe estar diseñada para disminuir este ensanchamiento tanto como sea posible (Yasuda, 2007).…”

Section: Análisis De Reacción Nuclearunclassified

Análisis De Reacción Nuclear (Nra) Y Emisión De Rayos Γ Inducidos Por Partículas (Pige)

Gaspar

2020

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En este artículo de revisión se da a conocer el funcionamiento de dos técnicas nucleares modernas: el análisis de reacción nuclear (NRA) y la emisión de rayos γ inducidos por partículas (PIGE) que han surgido a partir de la necesidad de analizar elementos livianos. También se mencionan ventajas como la alta sensibilidad y desventajas como la dificultad de interpretar sus espectros. Además, se revisan aplicaciones en donde varios autores han desarrollado trabajos de investigación y se da un resumen sobre lo que se espera de la técnica dentro de los próximos años.

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“…This means that PIXE/PIGE allows serial measurements of Ca and F at different time points during demineralization and remineralization in carious lesions. In previous studies, PIXE/PIGE was used for analyzing the Ca and F, even Sr in sound and carious teeth 6 , 8 – 13 . However all these studies undertook a single measurement of the mineral components in tooth substance, or a measurement of single mineral elements in cavities.…”

Section: Introductionmentioning

confidence: 99%

Use of PIXE/PIGE for sequential Ca and F measurements in root carious model

Yagi

Yamamoto

Uemura

et al. 2017

Sci Rep

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The progress of caries has conventionally been evaluated by checking changes in mineral density using transverse microradiography (TMR). Recent advances have seen development of a new measurement system, using in-air micro proton induced X-ray/gamma-ray emission (PIXE/PIGE). PIXE/PIGE enables analysis of distributions and concentrations of multiple mineral elements in a carious lesion. The aim of this study was to evaluate the effectiveness of PIXE/PIGE for investigating the development of root caries. In summary, we successfully established a multi-elemental sequential measuring method using in-air micro-PIXE/PIGE to identify the dynamic distributions and concentrations of Ca and F in human root dentin. The PIXE/PIGE potentially offers a useful advantageous technique for studying carious development by using as a combination with conventional techniques such as TMR and Micro-computed tomography (µCT).

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In-air micro-PIGE measurement system for fluorine analysis of the tooth

Cited by 16 publications

References 10 publications

In-air micro-proton-induced X-ray/gamma-ray emission analysis of the acid resistance of root dentin after applying fluoride-containing materials incorporating calcium

In-air micro-proton-induced X-ray/gamma-ray emission analysis of the acid resistance of root dentin after applying fluoride-containing materials incorporating calcium

Análisis De Reacción Nuclear (Nra) Y Emisión De Rayos Γ Inducidos Por Partículas (Pige)

Use of PIXE/PIGE for sequential Ca and F measurements in root carious model

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