目的观察不同浓度氟泡沫对脱矿牙釉质表面显微硬度值的影响。
Objective To investigate the influence of fluoride foam of different concentration on microhardness of demineralized enamel surface.
研究结果表明，混粉电火花镜面加工不但能够显著降低加工表面粗糙度值，而且能够提高加工表面的耐磨性、耐蚀性和表层显微硬度。
It is proved that mirror EDM with mixed dielectric powders can not only decrease the surface roughness, but also improve the surface abradability, corrosion-resistance and micro - hardness.
样品表面的显微硬度值达到了335HV0.05，与基体相比表面硬度提高两倍左右。
The surface microhardness had improved from 160HV0.05 of the initial sample to 335HV0.05 after CRPD.
样品表面的显微硬度值达到了335HV0.05，与基体相比表面硬度提高两倍左右。
The surface microhardness had improved from 160HV0.05 of the initial sample to 335HV0.05 after CRPD.
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