【摘要】 目的比较修复后镍铬合金烤瓷冠和钛合金烤瓷冠的金属内冠表面形貌改变。方法拆除修复时间1～3年的6例镍铬合金烤瓷冠和6例钛合金烤瓷冠进行扫描电镜观察比较,同时分别与新制作的镍铬及钛合金烤瓷冠比较。结果戴用后的镍铬和钛合金烤瓷冠均有腐蚀,但这两种冠的腐蚀程度没有差别。结论钛合金和镍铬合金烤瓷冠的耐腐蚀性没有显著差别。更多还原

【Abstract】 Objective To evaluate the difference in corrosion resistance between Ni-Cr Alloy and Ti-6Al-4V Alloy porcelain crown.Methods Six Ni-Cr and 6 Ti surfacial appearance of internal crowns were observed under a scanning electron microscope after 1～3 year restoration. The results were compared with new crowns respectively.Results Corrosion appeared in all Ni-Cr and Ti alloy ceramic internal crowns.Conclusion There is no evident difference of corrosion between the Ti alloy and Ni-Cr alloy ceramic crowns.更多还原