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作者用McNee的方法测定了两组人(龋失补牙面指数高者和低者)原位牙菌斑中乳酸、蔗糖、葡萄糖、果糖的扩散常数(D),同时测定了原位菌斑密度,并分析了它与蔗糖的扩散常数(Ds)的关系。结果:在人牙原位菌斑中,蔗糖与乳酸的扩散常数无显著差异;两组人原位菌斑的D_L/D_S 无显著差异;三种糖在原位菌斑中的扩散常数无显著差异。我们认为菌斑中酸滞留不是由糖、酸的差速扩散引起的,龋病的发生也与此无直接关系。
The authors used McNee's method to determine the diffusion constants (D) of lactic acid, sucrose, glucose, and fructose in in situ plaque of two groups (high and low dental caries index patients), and in situ plaque density , And analyzed its relationship with the diffusion constant (Ds) of sucrose. Results: There were no significant differences in the diffusion constants of sucrose and lactic acid in the in situ dental plaque of human teeth. There was no significant difference in D_L / D_S between the two groups in in situ plaque. There was no significant difference in the diffusion constants difference. We believe that the accumulation of acid in plaque is not caused by the differential diffusion of sugar and acid, and the occurrence of dental caries is also not directly related to this.