纯钛烤瓷中微弧氧化处理的实验研究

The effect of microarc oxide film on titanium-ceramic bonding

目的:探讨微弧氧化处理应用对钛与瓷的结合强度的影响,摸索微弧氧化处理的适宜条件。方法:对钛表面进行喷砂、抛光、喷砂加微弧氧化处理和抛光加微弧氧化处理后,分为4组表面进行纯瓷粉烧结。根据ISO9693标准,对钛瓷间的三点弯曲结合强度进行测试。镍铬合金与瓷的结合强度测试结果为对照。结果:粗糙面微弧氧化组钛瓷结合强度(45.84±3.15MPa)与NiCr/VITA99组的结合强度(48.35±3.06MPa)相比,在统计学上无显著差异(P>0.05),却明显大于粗糙面组的结合强度(36.12±3.03MPa)(P<0.05);光滑面组钛/瓷结合强度(30.79±1.43MPa)明显小于粗糙面组光滑面组(P<0.01),但大于光滑面微弧氧化组(24.12±3.38MPa)(P<0.05)。结论:纯钛表面喷砂后进行微弧氧化处理,可有效地提高钛瓷的结合强度。

Objective： To assess the effect of microarc oxide film on titanium-ceramic bonding strength. Methods： Three-point bending test was used to evaluate the bond strength of Noritake Ti22 to pure titanium substrate which were prepared with four different surface treatment （polishing, sandblasting, polishing-microarc-oxidation and sandblasting-microarc-oxidation）. The bond strength between the Ni-Cr alloy and conventional porcelain was chosen as control. Results： The bond strength of titanium substrate to Noritake Ti22（45.84± 3.15 MPa）using sandblasting-microarc-oxidation is almost equal to that of the NiCr to convention porcelain（48.35± 3.06MPa）（P〉0.05）. But the bond strength of sandblasted titanium substrate to Noritake Ti22 （36.12 ± 3.03MPa） is higher than polished-titanium-Noritake Ti22（30.79± 1.43MPa）（P 〈0.05）, which are also significantly lower than that of sandblasting-microarc-oxidation（P 〈0.01）. Conclusion： The microarc oxide film on the surface of pure titanium with sandblasting can increase the titanium-ceramic bond strength.