用XPS和SEM研究氟化物对牙釉质早期脱矿和再矿化的影响  

The Study of Eariler Demineralization and Remineralization of Enamel by XPS and SEM

作　　者：李鸣宇[1] 吕云庆[1] 魏诠 

机构地区：[1]白求恩医科大学附属口腔医院,上海第二医科大学附属第九人民医院,吉林大学分析测试中心

出　　处：《分析测试学报》1995年第1期36-38,共3页Journal of Instrumental Analysis

摘　　要：用光电子能谱（ＸＰＳ）和扫描电镜（ＳＥＭ）分析体外人牙釉质片经含不同浓度氟化物的脱矿液和再矿化液处理后釉质表面化学成分和形态学变化。结果发现，脱矿液中单独加入低浓度氟化物不能有效抑钙和磷溶解，在有外源性钙和磷存在时，才能获得再矿化而抑制钙和磷溶解。脱矿环境中有高浓度氟，通过局部沉积氟化钙而抑制酸与牙的反应。氟促进再矿化主要表现在加速钙的沉积，同时本身参与形成氟磷灰石，提高了牙齿的耐酸能力。X-ray photoelectron Spectroscopy(XPS)and SEM were used in the study of Chemical and morphological changes of enamel surface immersed in demineralization or remineralization solutions containing various concentrations of fluoride ions,It was found that the addition of low concentration of fluorides to the demine ralization solutions could not effectively inhibit the dissolution of calcium and phosphorus,Only in the presence of exogenous calcium and phosphorus,demineralization of the enamel surface could be suppressed,and re mineralization takes place.High fluoride concentration can accelerate the remineralization process through the deposition of calcium fluoride and fluorapatite on the enamel surface,and thus enhance the acid-invulnerability of the enamel surface.

关 键 词：氟化物 牙釉质 脱矿 再矿化 XPS SEM 

分 类 号：R781.1[医药卫生—口腔医学] O613.41[医药卫生—临床医学]