31种元素在着色氟牙症釉质中的定量分析

Quantitative analysis of thirty one elements in the stained dental fluorosis of enamel

目的 定量分析着色型氟牙症、正常水氟区离体牙釉质中的30种元素及氟元素含量与氟牙症着色的关系。方法 用等离子发射光谱分析和氟电极法,测定31种元素在43颗不同着色程度的离体牙釉质中的含量。结果 ①氟、磷、钙、锰、砷、硒、铝、钛、铌、硼等10种元素含量与釉质着色程度呈正相关;②锰、砷、硒、锶、铌、钙、磷元素含量与釉质中氟含量呈显著性正相关关系,P<0.05。结论 锰、砷、硒。

Objective To study the relationship between concentrations of thirty elements and fluorine element in teeth with stained dental fluorosis from high fluoride water area and teeth from normal fluoride area. Methods The concentration of thirty one elements in 43 teeth was measured by plasmatron spectrographic analysis and fluoride selective electrode. Results ①Content of F、P、Ca、Mn、As、Se、Al、Ti、Mo、B elements in enamel had a direct relationship to severity of enamel staining. ②Content of Mn、As、Se、Sr、Nb、Ca、P elements were high positively related to content of fluorine in enamel ( P <0.05). Conclusion Mn、As、Se、F content is closely related to the pigment formation in dental fluorosis of enamel.