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本文以偏光显微镜和扫描电镜术观察不同人工龋条件下釉质病变的变化,结果表明,人工龋表层的形成是由于外环境中H~+浓度的增加。H~+渗入釉质内部后,使羟基磷灰石溶解,造成羟基磷灰石晶体间隙中钙、磷酸盐离子浓度上升,形成浓度梯度,随后离子向外扩散,沉积于釉质表层下方,形成新的表层。因此,外环境中H~+浓度是釉质脱矿与再矿化的主要推动力。
In this paper, the changes of enamel lesions under different artificial caries conditions were observed with polarized light microscope and scanning electron microscopy. The results showed that the formation of artificial carious surface was due to the increase of H ~ + concentration in the external environment. H ~ + infiltrated into the enamel, the hydroxyapatite dissolved, resulting in hydroxyapatite interstitial calcium and phosphate ion concentrations rose to form a concentration gradient, followed by diffusion of ions outward, deposited in the enamel below the surface to form a new surface layer. Therefore, the H ~ + concentration in the external environment is the main driving force of enamel demineralization and remineralization.