摘要
背景:在非贵金属烤瓷合金中,钴铬烤瓷合金在生物相容性、耐腐蚀性以及金属稳定性方面都优于镍铬烤瓷合金和含钛烤瓷合金,被广泛的应用于临床。目的:通过与德国BEGO钴铬合金对比,评价自制钴铬烤瓷合金的金瓷结合性能。方法:制作25mm×3mm×0.5mm规格的德国BEGO钴铬合金与自制钴铬烤瓷合金两种合金的金属试条,分别熔附8mm×3mm×1mm的VITAMK95瓷粉,采用三点弯曲的方法测试金瓷结合力,利用扫描电镜观察金属氧化界面。结果与结论:加力后国产和德国BEGO钴铬合金样本随着力量的增加瓷层开裂同时完全脱落,表面成灰黑色氧化膜,无明显瓷残余;自制钴铬烤瓷合金与德国BEGO钴铬合金的金瓷结合力差异无显著性意义[(41.26±2.68),(41.35±2.59)MPa,P>0.05]。说明自制钴铬烤瓷合金的金瓷结合强度高于ISO所要求的基本值25MPa,且与德国BEGO钴铬合金相比无差异,可满足临床要求。
BACKGROUND： Co-Cr alloy has better biocompatibility, anti-corrosion and stability than Ni-Cr and Ti alloy. It is more and more used extensively. OBJECTIVE： Compared to the Germany BEGO cobalt-chromium alloy, to make initial evaluation to the combination of ceramic to metal of the new-type Co-Cr alloys. METHODS： VITA MK95 porcelain powder of 8 mm×3 mm×1 mm was fused to the two types of alloys of 25 mm×3 mm×0.5 mm and the combination of ceramic to metal of the two types of alloys was tested using three-point flexure bond test and scanning electron microscope. RESULTS AND CONCLUSION： For two kinds of alloys after strength loading, ceramic layer cracked and detached completely at the same time, gray-black oxide film formed on the alloy surface, and there was no significant residual porcelain （P 0.05）. The bonding of ceramic to metal of the new type Co-Cr alloys is greater than the basic value of the required ISO （25 MPa）, which do not different from that of the Germany BEGO and meet the clinical requirements.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2011年第47期8915-8918,共4页
Journal of Clinical Rehabilitative Tissue Engineering Research
