锌和镁对人龈下牙石中白磷钙石形成的影响。

Effect of Zn and Mg on the formation of whitlockite in human subgingival calculus.

作者信息

Knuuttila M, Lappalainen R, Kontturi-Närhi V

出版信息

Scand J Dent Res. 1980 Dec;88(6):513-6. doi: 10.1111/j.1600-0722.1980.tb01261.x.

DOI:10.1111/j.1600-0722.1980.tb01261.x

Abstract

X-ray diffraction analyses were carried out from pooled samples of old subgingival calculus. Also the concentration of Ca, Mg, Zn, Sr, Pb, Fe and Cu from these samples were determined by means of atomic absorption spectrophotometry. The comparison of the samples containing almost the same Zn concentration and two different concentrations of Mg (9 mg/g and 16 mg/g) showed an increase of 2.0.10 and 220 whitlockite reflections with an increasing Mg concentration. The increase of Mg concentration shifted whitlockite reflections suggesting a contraction of a-axis. The increase of Zn concentration showed an increase of 2.0.10 and 220 reflections indicating the fitness of Zn into the lattice of whitlockite. No changes of a-axis were detectable. When comparing all diffractograms and the results obtained from chemical analyses, the presence of Zn-MG-whitlockite proved evident.

摘要

对陈旧的龈下牙石混合样本进行了X射线衍射分析。此外，还通过原子吸收分光光度法测定了这些样本中钙、镁、锌、锶、铅、铁和铜的浓度。对锌浓度几乎相同但镁浓度不同（9毫克/克和16毫克/克）的样本进行比较，结果显示随着镁浓度的增加，白磷钙矿反射分别增加了2.0×10和220。镁浓度的增加使白磷钙矿反射发生偏移，表明a轴收缩。锌浓度的增加显示2.0×10和220反射增加，表明锌适合进入白磷钙矿晶格。未检测到a轴变化。比较所有衍射图和化学分析结果后，锌-镁-白磷钙矿的存在得到了证实。