Anderson P, Elliott J C
Department of Child Dental Health, London Hospital Medical College, United Kingdom.
J Dent Res. 1992 Aug;71(8):1473-81. doi: 10.1177/00220345920710080301.
Subsurface demineralization of dental enamel during acid dissolution has been reported many times, but its cause remains obscure. At first, the phenomenon was thought to result from the physical structure of enamel. More recent studies have shown that subsurface demineralization occurs in other permeable solids, indicating that there must be more fundamental factors involved in this curious effect. In order for this phenomenon to be investigated, dissolution experiments were carried out by means of real-time scanning microradiography in various systems, including enamel, or aggregates of hydroxyapatite (calcium, strontium, or barium), or hydroxides (calcium or magnesium). These were chosen to discriminate between effects of structure and composition. It was found that it was not possible for the demineralization observed in these systems to be attributed to a common feature. From this, it is concluded that subsurface demineralization in enamel and other mineralized tissues should not be ascribed to a single cause.
牙釉质在酸溶解过程中的表面下脱矿现象已被多次报道，但其原因仍不清楚。起初，人们认为这种现象是由牙釉质的物理结构造成的。最近的研究表明，表面下脱矿也发生在其他可渗透的固体中，这表明在这种奇特的效应中必然涉及到更基本的因素。为了研究这一现象，通过实时扫描显微放射照相术在各种体系中进行了溶解实验，这些体系包括牙釉质、羟基磷灰石（钙、锶或钡）聚集体或氢氧化物（钙或镁）。选择这些体系是为了区分结构和成分的影响。结果发现，在这些体系中观察到的脱矿现象不可能归因于一个共同的特征。由此得出结论，牙釉质和其他矿化组织中的表面下脱矿不应归因于单一原因。
