Understanding the Crystallinity Indices Behavior of Burned Bones and Teeth by ATR-IR and XRD in the Presence of Bioapatite Mixed with Other Phosphate and Carbonate Phases

G. Piga, D. Gonçalves, T. Thompson, A. Brunetti, A. Malgosa, S. Enzo
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引用次数: 42

Abstract

We have critically investigated the ATR-IR spectroscopy data behavior of burned human teeth as opposed to the generally observed behavior in human bones that were subjected to heat treatment, whether deliberate or accidental. It is shown that the deterioration of the crystallinity index (CI) behavior sometimes observed in bones subjected to high temperature appears to be of higher frequency in the case of bioapatite from teeth. This occurs because the formation of the β-tricalcium phosphate (β-TCP) phase, otherwise known as whitlockite, clearly ascertained by the X-ray diffraction (XRD) patterns collected on the same powdered specimens investigated by ATR-IR. These results point to the need of combining more than one physicochemical technique even if apparently well suitable, in order to verify whether the assumed conditions assessed by spectroscopy are fully maintained in the specimens after temperature and/or mechanical processing.
用ATR-IR和XRD研究生物磷灰石与其他磷酸盐和碳酸盐混合存在下烧伤骨和牙齿的结晶度指数行为
我们批判性地研究了烧伤人类牙齿的ATR-IR光谱数据行为,而不是通常观察到的人类骨骼的行为,无论是故意的还是偶然的。结果表明,有时观察到的结晶指数(CI)行为的恶化,在高温下的骨骼中,来自牙齿的生物磷灰石似乎频率更高。这是因为β-磷酸三钙(β-TCP)相的形成,也被称为whitlockite,在ATR-IR研究的相同粉末样品上收集的x射线衍射(XRD)图中清楚地确定。这些结果表明,需要结合多种物理化学技术,即使表面上很合适,以验证在温度和/或机械处理后样品中是否完全保持光谱评估的假设条件。
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