VARIATION IN PATTERN OF ACID ETCHING OF HUMAN DENTAL ENAMEL EXAMINED BY SCANNING ELECTRON-MICROSCOPY
VARIATION IN PATTERN OF ACID ETCHING OF HUMAN DENTAL ENAMEL EXAMINED BY SCANNING ELECTRON-MICROSCOPY
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DOI：
10.1159/000260179
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发表时间：
1975-01-01
期刊：
影响因子：
4.2
通讯作者：
FEJERSKOV, O
中科院分区：
文献类型：
--
作者：
SILVERSTONE, LM;SAXTON, CA;FEJERSKOV, O
这项研究表明，人牙釉质暴露于体外酸溶液中可产生三种基本的酸蚀图案。在最常见的称为1型蚀刻图案中，优先去除棱镜芯材料，使棱镜周边相对完整。在第二类型2蚀刻图案中，观察到反转图案。棱镜的周边区域被优先移除，留下棱镜核心保持相对不受影响。在类型3蚀刻图案中，存在更随机的图案，其区域对应于类型1和2损伤以及蚀刻图案不能与棱柱形态相关的区域。这些发现不同于以往的研究，其中1型模式被归因于酸的作用和2型蚀刻模式的攻击螯合剂。因此，结果表明，在酸性溶液的作用下，人牙釉质中不存在一种特定的蚀刻模式。这种由酸产生的差异很难根据化学成分和微晶取向的变化来解释。这进一步突出了不仅在牙齿之间或表面之间，而且在单个牙齿表面上的不同部位之间，牙釉质中可能发生的结构变化。
This study has shown that the exposure of human dental enamel to acid solutionsin vitroproduces three basic etching patterns. In the most common, called type 1 etching pattern, prism core material was preferentially removed leaving the prism peripheres relatively intact. In the second, type 2 etching pattern, the reverse pattern was observed. The peripheral regions of prisms were removed preferentially, leaving prism cores remaining relatively unaffected. In the type 3 etching pattern, there was a more random pattern, areas of which corresponded to types 1 and 2 damage together with regions in which the pattern of etching could not be related to prism morphology. These findings differ from previous studies in which the type 1 pattern was ascribed to acid action and type 2 etching pattern to attack by chelators. The results therefore suggest that there is no one specific etching pattern produced in human dental enamel by the action of acid solutions. Such differences produced by acids are difficult to explain on the basis of variation in chemical composition, and crystallite orientation. This further highlights the variation in structure that can occur in enamel not only from tooth to tooth, or surface to surface, but also from site to site on a single tooth surface.