摘要
目的:观察镍铬合金烤瓷冠修复后患者头发中镍铬元素含量的变化,探讨镍铬合金长期存在于口腔中的安全性。方法:选取60名经体检合格的健康人作为正常对照组;60名上、下颌前牙有任意3颗行镍铬合金烤瓷冠修复的患者作为实验组。实验组修复后半年及1年和对照组均采用火焰原子吸收光谱法测定头发镍铬元素含量。结果:头发镍含量:实验组半年与对照组比较无显著性差异(P>0.05);实验组1年与对照组相比较有显著性差异(P<0.05);实验组1年与半年比较无显著性差异(P>0.05)。头发铬含量:各组之间比较均无显著性差异(P>0.05)。结论:镍铬合金烤瓷冠修复后会在口腔环境中释放一定的镍、铬,且释放的量与时间有关,但量很微小。
Objective：To investigate the concentrations of nickel （Ni） and chromium （Cr） ion in hair, and to explore the safety of Ni-Cr-based porcelain-fused-metal （ PFM ） crown in oral clinic application. Methods： 60 healthy patients were selected as control group;60 people who were treated by using Ni-Cr-based porcelain-fused- to-metal crown were selected as experimental group. The contents of Ni and Cr in hair were detected by flame atomic absorption spectrometer in both group. Results：Nickel content in hair： there was no difference between the 2 group （ P 〉0.05 ） ;the amount of Ni in experimental group was higher than that in control group after one year（ P 〈 0.05 ） ; there was no difference between half year and one year （ P 〉 0.05 ）. Chromium content in hair： there was no difference between experimental group and control group （ P 〉 0.05 ）. Conclusion： After Ni-Cr-Based porcelain-fused-to-metal crown application, the metal ion can be released and absorbed by human body. But the content is almost harmless to human body.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2007年第5期735-737,共3页
Journal of Practical Stomatology
基金
河北省张家口市科技攻关项目(编号:061155)
关键词
镍铬合金烤瓷冠
微量元素
镍
铬
头发
Ni-Cr- Based porcelain-fused-to-metal crown
Trace elements
Nickel
Chromium
Hair
