国产RF型氧化锆全瓷材料放射性元素研究

Study on radioactive elements of all ceramics for RF Zirconia

目的:研究RF氧化锆全瓷材料中所含放射性元素。方法:利用电感耦合等离子体质谱仪ICP-MS对三种氧化锆陶瓷(RF型氧化锆,Emax氧化锆,VITA氧化锆)瓷块材料中Pb、Th、U等放射性元素的含量进行检测。结果:三种氧化锆全瓷材料中都含有一定量的微量元素,放射性元素含量极少,RF型氧化锆Pb、Th、U含量分别为0.52×10-6μg、0.63×10-6μg、0.50×10-6μg;Emax氧化锆Pb、Th、U含量分别为0.23×10-6μg、0.09×10-6μg、0.07×10-6μg;VITA氧化锆Pb、Th、U含量分别为0.18×10-6μg、0.10×10-6μg、0.18×10-6μg。三种材料放射性元素含量无显著性差异(P>0.05)。结论:RF型氧化锆全瓷材料符合材料放射限量标准(Gb6566-2001)可以作为临床口腔全瓷材料使用。

Objective：To study the radioactive elements of RF Zirconia.Method：The quantity of Pb、Th、U in three kinds of Ceramic materials was detected by Inductively Coupled Plasma Mass Spectrometry.Result：three kinds of Zirconia materials all contain microelement,but there is little radioactive elements in RF Zirconia,The RF Zirconia group data shows that the quantity of Pb、Th、U is separately 0.52 ×10-6 μg、0.63×10-6 μg、0.50×10-6 μg,the emax of group data shows 0.23×10-6 μg、0.09×10-6 μg、0.07×10-6 μg.and the VITA of group data shows 0.18×10-6 μg、0.10×10-6 μg、0.18×10-6 μg.there is no statistic differences between the experimental and control groups（P 0.05）.Conclusion：RF is qualified according to standard（Gb6566-2001）for dental materials.