Wavelength-independent microradiography: a method for non-destructive quantification of enamel and dentin mineral concentrations using polychromatic x-rays
| Autor: | J.J. ten Bosch, F.M. Herkstroter |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
0301 basic medicine
Materials science Analytical chemistry chemistry.chemical_element Mineralogy Zinc 03 medical and health sciences 0302 clinical medicine stomatognathic system Non destructive Dentin medicine Mass attenuation coefficient Dental Enamel General Dentistry Minerals Mineral Enamel paint Attenuation 030206 dentistry Microradiography Wavelength stomatognathic diseases 030104 developmental biology medicine.anatomical_structure chemistry visual_art visual_art.visual_art_medium |
| Zdroj: | Journal of Dental Research, 69(8), 1522-1526. SAGE Publications Inc. |
| ISSN: | 0022-0345 |
| Popis: | Wavelength-independent Microradiography (WIM), described in this paper, used polychromatic, high-energy (less than or equal to 60 kV) x-rays for determination of mineral concentrations in tooth material non-destructively. This was done with the aid of a reference step-wedge made of 94% aluminum, 6% zinc. The mass attenuation coefficient of this material has a wavelength-independent ratio to the mass attenuation coefficients of enamel and dentin. With this method, mineral concentrations of enamel and dentin samples, with a thickness up to 500 microns, were determined at 20- and at 60-kV tube voltage. The samples were demineralized for 72 and 144 h and measured again. Comparison of the data showed that mineral quantification was within 1.5%, independent of the x-rays used. Finally, these mineral concentrations--obtained from the Wavelength-independent Microradiography--were compared with measurements of the same samples by Longitudinal Microradiography. A correlation of 0.99 was found for enamel and one of 0.96 for dentin. |
| Databáze: | OpenAIRE |
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