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目的：研究早期龋表层结构。方法：采用细菌人工龋实验技术造成早期人釉质龋样损害，用扫描电镜（ＳＥＭ）观察损害的表层结构变化。结果：釉质龋的表层结构有三种形式：①相对完整的釉质区；②局部孔隙区；③不规则破坏区。在相对完整的表层釉鞘增大，晶体间的间隙增大。这些间隙为脱矿过程中矿物质丢失提供通道，出现龋损过程中，表层下的破坏比表层更为明显的典型病理改变。结论：早期釉质龋相对完整的表层概念值得商榷。
Objective: To study the early carious surface structure. Methods: Early artificial enamel caries-like lesions were induced by bacterial artificial dental caries test. The changes of the surface structure of damaged enamel were observed by scanning electron microscopy (SEM). Results: The surface structure of enamel caries have three forms: ① relatively intact enamel area; ② local pore area; ③ irregular damage area. Glaze sheath in a relatively complete surface increases, the gap between the crystals increases. These gaps provide a channel for minerals to be lost during demineralization. In the process of carious lesions, the typical pathological changes were more obvious than the superficial ones. CONCLUSIONS: The relatively intact surface concept of early enamel caries is debatable.