Backscattered electron imaging of partially-demineralized enamel.
Backscattered electron imaging of partially-demineralized enamel.
复制标题
部分脱矿牙釉质的背散射电子成像。
DOI：
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
D. Nelson
中科院分区：
文献类型：
--
作者：
D. Nelson
背散射电子显微镜由于其高分辨率和相对容易制备样品的优点，越来越多地被用作研究牙釉质溶解的技术。利用该技术，以优于0.1微米的分辨率观察到瑞兹乌斯条纹、交叉条纹和棱柱微观结构等亚表面细节。由于脱矿牙釉质的BE图像与显微放射照相图像非常相似，因此很容易以类似的方式解释它们。我们试图表明BE图像的解释并不简单，因为牙釉质不是均匀的单相材料，而是由不同数量的磷灰石矿物和有机物组成的双组分复合材料。在再矿化和脱矿过程中，可能会析出其他磷酸钙相，使图像的解释进一步复杂化。部分脱矿牙釉质的BE图像受到蛋白质/矿物质比例的局部变化以及其他磷酸钙相的再沉淀的影响。BE图像不是矿物密度图，而是平均原子序数图。
Backscattered electron (BE) microscopy is being used increasingly as a technique to study the dissolution of dental enamel because of its high resolution and relatively easy sample preparation. Subsurface details such as striae of Retzius, cross-striations and prism microstructure have been observed with a resolution better than 0.1 micrometers using this technique. Since BE images of demineralized enamel appear very similar to microradiography images, it is tempting to interpret them in a similar fashion. We attempt to show that the interpretation of BE images is not straightforward because enamel is not a homogeneous one-phase material, but a two-component composite material consisting of variable amounts of apatite mineral and organic matter. During re- and demineralization, other calcium phosphate phases may precipitate to further complicate the interpretation of the images. BE images of partially demineralized enamel are affected by local variations in the protein/mineral ratio and also by the reprecipitation of other calcium phosphate phases. BE images are not mineral density maps, but are mean atomic number maps.
龋齿人类牙釉质条纹的超微结构。
影响因子：
4.2
作者：
Simmelink,JW;Nygaard,VK
通讯作者：
Nygaard,VK