Klinger H G, Wiedemann W, Docos E
Dtsch Zahnarztl Z. 1980 Aug;35(8):823-7.
The present paper deals with the relationship between microhardness, and the circumferential as well as radial location of the test points on the tooth surface. The measurements did not indicate a significant correlation between the average hardness of the tooth sections, and their location on the circumference. The average hardness of the sections on one probe, however, showed a large variation. Hardness was also correlated with the distance from the enamel surface. There was a steep hardness gradient in the outermost 50 micrometer thick enamel layer: hardness increased in the direction to the dentino-enamel junction. The investigated enamel layer seems to be layer of less mineralized enamel which might have its origin in de-, and remineralization processes on the enamel surfaces.
本文探讨了显微硬度与牙齿表面测试点的圆周及径向位置之间的关系。测量结果并未表明牙齿各部分的平均硬度与其在圆周上的位置存在显著相关性。然而，一个探针上各部分的平均硬度显示出较大差异。硬度还与距釉质表面的距离相关。在最外层50微米厚的釉质层中存在陡峭的硬度梯度：硬度朝着牙本质-釉质界方向增加。所研究的釉质层似乎是矿化程度较低的釉质层，其可能源于釉质表面的脱矿和再矿化过程。
