Objective:To explore the causes of dentin caries by assay of the content of organic acids in carious dentin.

目的：通过对牙本质龋中有机酸含量的测定，探讨牙本质龋形成原因。

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Conclusion: lactate acid formate acid, acetate acid, propionate acid and butyrate acid constituted above 98% of all organic acids in carious dentin, with the content of lactate acid being the highest.

结论：牙本质龋中的有机酸以乳酸含量最高，乳酸、甲酸、乙酸和丙酸占所有有机酸的98%以上。

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