Lappalainen R, Knuuttila M
Scand J Dent Res. 1981 Dec;89(6):437-44. doi: 10.1111/j.1600-0722.1981.tb01706.x.
The crystallization of human dentin and enamel containing different concentrations of Zn was studied using X-ray diffraction analysis. The concentrations of Ca, Mg, Mn, Fe, Zn, Cu, Co, Ni, Sr and Pb in the samples were determined by atomic absorption spectrophotometry. The concentration of F was assayed with a combination fluoride electrode. The increase of the Zn concentration (microgram/g) from 150 to 572 in dentin was found to intensify apatite reflections indicating changes parallel to c-axis. A slight increase parallel to a-axis (or better crystallization) of lattices was demonstrated in both dentin and enamel. The increase of Zn concentration from 164 microgram/g to 692 microgram/g in enamel weakened 002 and 112 reflections. The effect of Zn on the crystallinity of synthetic apatite prepared at 37 degrees C was of the same kind as its effect on the dentin.
采用X射线衍射分析研究了含不同浓度锌的人牙本质和牙釉质的结晶情况。通过原子吸收分光光度法测定样品中钙、镁、锰、铁、锌、铜、钴、镍、锶和铅的浓度。用组合氟电极测定氟的浓度。发现牙本质中锌浓度（微克/克）从150增加到572会增强磷灰石反射，表明与c轴平行的变化。在牙本质和牙釉质中均显示出晶格在a轴方向略有增加（或更好的结晶）。牙釉质中锌浓度从164微克/克增加到692微克/克会减弱002和112反射。锌对37℃制备的合成磷灰石结晶度的影响与其对牙本质的影响相同。
