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Updated: Jan 30, 2026

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
Published on: June 19, 2018
Evaluation of crystalline indexes obtained through infrared spectroscopy and x-ray diffraction in thermally treated
Nancy Vargas-Becerril1, José Reyes-Gasga1, Ramiro García-García1
1Instituto de Física, UNAM, Circuito de la Investigación s/n, Ciudad Universitaria, 04510 Coyoacán, Ciudad de México, Mexico.
Abstract:
The crystalline indexes obtained through infrared spectroscopy (CIIR) and X-ray diffraction (CIXRD) were used to analyze the structural changes of dentin and enamel in human teeth when subjected to heat treatments between room temperature (25 °C) to 1200 °C in atmospheric air and argon. Thermogravimetric (TGA) and differential scanning calorimetry (DSC) analyses of sound powders were also used to support the analysis. As the temperature increased, the CIXRD increased exhibiting a behavior like that of the crystal grain size, and the CIIR increased until the β-TCP phase appeared. These results indicated that the CIIR was more variable to structural changes than the CIXRD.
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