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牙釉质是人体最硬的组织,由釉柱和釉间质交替排列而成,在进食和咀嚼过程中,表现出良好的耐磨性.本文采用纳米压痕/划痕仪、激光共聚焦扫描显微镜、轮廓仪等测试仪器,研究了人牙釉质在pH=3.20的米醋和白醋两种食用醋介质中酸蚀前后的表面力学性能和摩擦学行为.结果表明,白醋和米醋均能导致牙釉质表面发生酸蚀损伤,釉质表面的压痕硬度和弹性模量明显降低,摩擦系数产生显著波动,耐磨性下降.在pH值和酸蚀时间相同情况下,白醋溶液对牙釉质的酸蚀影响大于米醋溶液.
Enamel is the hardest tissue in the human body and consists of glaze and glaucoma alternately arranged in the process of eating and chewing, showing good wear resistance.In this paper, nanoindentation / scratch tester, confocal laser scanning Microscope and profilometer, the surface mechanical properties and tribological behavior of human enamel before and after acid etching in rice vinegar and white vinegar with pH = 3.20 were studied.The results showed that both white vinegar and rice vinegar can cause enamel Erosion of the surface occurs, the enamel surface indentation hardness and elastic modulus decreased significantly, the friction coefficient of significant fluctuations, wear resistance decreased.At the same pH value and etching time, the white vinegar solution on the enamel corrosion More than vinegar solution.