Struzak-Wysokińska M, Kot I
Czas Stomatol. 1989 Feb;42(2):95-102.
The chemical composition of the teeth is determined during its development, however, in the postdevelopmental period changes of inorganic components are possible, which have an important effect on the morphology, structure and chemical composition of teeth. Using the method of X-ray fluorescence the levels of Ca, P, Cl, S, K and Zn were determined in hard tissues of 218 permanent non-carietic teeth from all dental groups. The correlation between these various elements in the teeth and the age of the subjects, whose teeth were taken for the investigations, was expressed with the correlation coefficient r of Pearson. The significance of the correlation was analysed using Students t test. In case of significant correlation equations of regression were determined for predicting the expected value of the level of a given element in teeth for a given age. No significant differences were noted in the levels of Ca and P in relation to age. The levels of S, K and Zn rose with age, while the chloride content was decreasing.
牙齿的化学成分在其发育过程中就已确定，然而，在发育后的时期，无机成分可能会发生变化，这对牙齿的形态、结构和化学成分有重要影响。采用X射线荧光法测定了218颗来自所有牙组的恒牙硬组织中钙、磷、氯、硫、钾和锌的含量。用Pearson相关系数r表示牙齿中这些不同元素与接受牙齿检查的受试者年龄之间的相关性。使用学生t检验分析相关性的显著性。在存在显著相关性的情况下，确定回归方程以预测给定年龄牙齿中给定元素水平的预期值。钙和磷的含量与年龄无关，无显著差异。硫、钾和锌的含量随年龄增长而升高，而氯含量则下降。
