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首页> 外文期刊>The Journal of Chemical Physics >On the assessment of hydroxyapatite fluoridation by means of Raman scattering
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On the assessment of hydroxyapatite fluoridation by means of Raman scattering

机译：用拉曼散射评估羟基磷灰石的氟化

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摘要

Hydroxyapatite is the main mineral component of bones and teeth. Fluorapatite, a bioceramic that can be obtained from hydroxyapatite by chemical substitution of the hydroxide ions with fluoride, exhibits lower mineral solubility and larger mechanical strength. Despite the widespread use of fluoride against caries, a reliable technique for unambiguous assessment of fluoridation in in vitro tests is still lacking. Here we present a method to probe fluorapatite formation in fluoridated hydroxyapatite by combining Raman scattering with thermal annealing. In synthetic minerals, we found that effectively fluoride substituted hydroxyapatite transforms into fluorapatite only after heat treatment, due to the high activation energy for this first order phase transition.
机译：羟基磷灰石是骨骼和牙齿的主要矿物质成分。氟磷灰石是一种生物陶瓷，可以通过用氟化物化学取代氢氧根离子从羟基磷灰石获得，其矿物溶解度较低，机械强度较高。尽管氟化物广泛用于龋齿，但仍缺乏可靠的技术来明确评估体外的氟化作用。在这里，我们提出了一种通过结合拉曼散射和热退火来探测氟化羟基磷灰石中氟磷灰石形成的方法。在合成矿物中，我们发现氟化物取代的羟基磷灰石仅在热处理后才能转化为氟磷灰石，这是因为该一级相变具有很高的活化能。

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