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含有尿素的溶液对人牙釉质的影响是有意义的,因为:(1)在唾液中含有尿素、浓度约为2 mM,(2)众所周知,尿素阻止蛋白中氢离子结合,并意味着可能影响釉质基质和矿物质与氢的结合。近来已证实0.1～0.5M尿素溶液可渗入釉质,主要是柱间部分。本研究目的有三;(1)研究尿素处理后釉质表面形态;(2)尿素对釉质解剖表面下(横切片)作用的扫描电镜(S EM)观察;(3)观察由延长稀释(0.1M)尿素溶
The effect of urea-containing solutions on human enamel is significant because: (1) urea is present in saliva at a concentration of about 2 mM; (2) it is well known that urea inhibits hydrogen ion binding in proteins and implies that it may affect Enamel matrix and the combination of minerals and hydrogen. Recently it has been confirmed 0.1 ~ 0.5M urea solution can penetrate the enamel, mainly inter-column part. The purpose of the study was threefold. (1) The morphology of enamel after urea treatment was studied. (2) The observation of the effect of urea on the surface of the enamel under the scanning electron microscope (SEM) Urea solution