五种烤瓷合金金瓷结合强度的比较

目的：比较镍铬合金、含钛的镍铬合金、钴铬合金、钯银合金和纯钛的金瓷结合强度。方法：执行ISO9693标准，采用三点弯曲试验分别测定镍铬合金、含钛的镍铬合金、钻铬合金、钯银合金、纯钛在常规热处理条件下的金瓷结合强度。结果：金瓷结合强度分别为：镍铬合金（37．82±2．72）Mpa；含钛的镍铬合金（39．23±2．45）Mpa；钴铬合金（39．06±3．41）Npa；钯银合金（47．98±3．74）Npa；纯钛（32．61±5．62）Mpa。镍铬合金、含钛的镍铬合金、钻铬合金组间差异无统计学意义（P〉0．05），这3种合金与纯钛、钯银合金组间差异都有统计学意义（P〈0．05），纯钛与钯银合金组间差异也有统计学意义（P〈0．05）。结论：①镍铬合金、含钛的镍铬合金、钴铬合金金瓷结合强度相近，都大于纯钛且小于钯银合金的金瓷结合强度。②镍铬合金、含钛的镍铬合金、钻铬合金、钯银合金和纯钛的金瓷结合强度都大于25Mpa，按ISO9693标准均可应用于临床。

Metal-ceramic bonding strength comparison among five porcelain fuse metal.

Objective： To investigate and compare the metal-ceramic bonding strength of Ni-Cr alloy, Ni-Cr-Ti alloy, Co-Cr alloy, Pd-Ag alloy and pure Titanium. Method： Fifty wax patterns having dimensions 25 mm X 3.0 mm X 0.5 mm were prepared by a metal mold. Metal-ceramic specimens were fabricated with five types of metal-ceramic alloys,10 for each type of alloy. All samples were prepared by the clinical empirical heat treatment. Ceramco 111 porcelain cement was fused and adhered to Ni-Cr alloy, Ni-Cr-Ti alloy, Co-Cr alloy and Pd-Ag alloy while Willi Geller porcelain cement to pure Titanium.The metal-ceramic bonding strengths were evaluated using a three-point bending test according to IS09693. The bonding strength data was analyzed using ANOVA and Bonferroni＇s test by SPSS16.0. Result： The mean value of bonding strength of five alloys were （37.82＋2.72）Mpa（Ni-Cr alloy）,（39.23＋2.45）Mpa（Ni-Cr-Ti alloy）,（39.06＋3.41）Mpa（Co-Cr alloy）, （47.98-＋3.74） Mpa（Pd-Ag alloy）and （32.61-＋5.62）Mpa（pure Titanium）.Ni-Cr alloy, Ni-Cr-Ti alloy and Co-Cr alloy groups （P 〉0.05）, the first three groups have significant difference with both pure Titanium group and Pd-Ag alloy group （P 〈0.05）,and Pd-Ag alloy group have significant difference with pure Titanium group too （P 〈0.05）. Conclusion： According to the test result, the metal-ceramic bonding strengths of Ni-Cr alloy, Ni-Cr-Ti alloy and Co-Cr alloy are closed,which are greater than that of pure Titanium and lower than that of Pd-Ag alloy. The bonding strengths of all metal-porcelain systems are within the acceptable levels by ISO9693 standard （〉25 Mpa）.