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为了了解镧(La~(3+))对脱矿釉质再矿化的影响,以基础矿化液及含10ppmLa~(3+)或氟(F~-)的矿化液分别处理脱矿后的人牙釉质,再作实验开窗区剖面由表及里的显微硬度测定,结果显示各试验组表层硬度明显低于内层硬度(P<0.05),但100μm以内各点之硬度值比校差异均无显著性(P>0.05);以各实验组相比较,表层硬度值之间差异有显著性(P<0.001),其他层次相应点之间硬度值差异均无显著性(P>0.05)。该结果表明矿化液中含La~(3+)或含F～-均能促进脱矿釉质发生再矿化,但La~(3+)的作用不及F~-。
In order to understand the effect of lanthanum (La ~ (3+)) on remineralization of demineralized enamel, the basic mineralized solution and the mineralized solution containing 10ppmLa ~ (3+) or fluorine (F ~ Of the enamel, and then the experimental window area profile from the table and the determination of microhardness, the results show that the surface hardness of each test group was significantly lower than the inner layer hardness (P <0.05), but the hardness value of less than 100μm There was no significant difference between the two groups (P> 0.05). There was a significant difference in surface hardness between the experimental groups (P <0.001) 0.05). The results show that the mineralized solution containing La ~ (3 +) or F ~ - can promote demineralization of demineralized enamel, but the role of La ~ (3 +) less than F ~ -.