Influence ofThrcc Remineranzation Materials on Physieoeh- emieal Structure of Demineralized Enamel

• Published in: 武汉理工大学学报：材料科学英文版 no. 2; pp. 410 - 416
• Main Author: LEI Jinmei GUO Jinxin FU Dongjie WANG Yake DU Xijin ZHOU Liqun HUANG Cui
• Format: Journal Article
• Language: English
• Published: 2014
• Subjects: 元素分析; 再矿化; 扫描电子显微镜; 无机材料; 牙釉质; 结构; 脱钙; 酪蛋白磷酸肽
• ISSN: 1000-2413; 1993-0437

This study aimed to evaluate the effect of three inorganic materials：casein phosphopeptide- amorphous calcium phosphate （CPP-ACP）, calcium sodium phosphosilicate （CSP） and sodium fluoride （NaF） on their remineralization potential. CPP-ACP, CSP and NaF were applicated in demineralized enamel for 4 h and then all enamel samples were immersed in remineralization solution. After 10 days, all samples were prepared for microhardness test, scanning electron microscopy （SEM） observation and the elemental level （%） analysis by energy dispersive X-ray spectroscopy （EDX）. The surface microhardness （SMH） values of three experimental groups were significantly higher than that of control group （P〈0.05）. The SMH value of NaF group was significantly higher than other experimental groups （P〈0.05）. The SEM micrographs showed that three remineralization materials caused distinct morphological changes and remineralized deposits were different from each other. EDX elemental analysis showed that there were significant differences in the Ca （wt%） and Ca：P molar ratio of the enamel layer among control and experimental groups. The Ca （wt%） and Ca：P molar ratio in NaF group were significantly higher than those of other experimental groups. There were no significant differences in P （wt%） among control and experimental groups （P〈0.05）. Three remineralization materials used in our study had the potential of remineralizing the demineralized enamel. NaF is the best and most feasible choice to be used in remineralizing the demineralized enamel.