Frank R M, Sargentini-Maier M L, Turlot J C, Leroy M J
Centre de Recherches (Unité INSERM, U 157, URA CNRS 588), Faculté de Chirurgie Dentaire, Université Louis Pasteur, Strasbourg, France.
Arch Oral Biol. 1989;34(8):593-7. doi: 10.1016/0003-9969(89)90012-5.
The zinc and strontium content of enamel and dentine from humans aged 9-64 yr was analysed, after systematic sampling, by X-ray fluorescence. Relatively high levels of zinc were found in both hard tissues but there was no significant increase with age. Zinc content decreased significantly from outer to inner enamel and increased significantly again from peripheral to pulpal coronal and root dentine. The strontium content was significantly higher in enamel than in dentine; there was a significant increase with age in enamel but not in dentine. However, outer and inner enamel showed no significant difference in strontium content. Almost similar amounts of strontium were found in coronal and root dentine.
通过系统采样，采用X射线荧光分析法对9至64岁人群的牙釉质和牙本质中的锌和锶含量进行了分析。在两种硬组织中均发现锌含量相对较高，但未随年龄显著增加。锌含量从牙釉质外层到内层显著降低，而从冠部和根部牙本质的周边到牙髓又再次显著增加。牙釉质中的锶含量显著高于牙本质；牙釉质中的锶含量随年龄显著增加，而牙本质中则不然。然而，牙釉质外层和内层的锶含量无显著差异。在冠部和根部牙本质中发现的锶含量几乎相似。
