牙本质暴露

dentin exposure的用法和样例：

例句

The underlying layer, called dentin, is more yellow.其下面层，称为牙本质，稍微显黄色。
Blot the canal dry with a large paper point, leaving the dentin visibly moist.使用大量的纸尖吸干根管，但保持牙本质粘结所需的明显湿润。

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