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首页> 外文期刊>Dental Materials Journal >Analysis of fracture surface of titanium-porcelain bonding by electron spectroscopy for chemical analysis
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Analysis of fracture surface of titanium-porcelain bonding by electron spectroscopy for chemical analysis

机译：电子光谱法分析钛-瓷结合断裂面

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Three commercially available porcelains bonded to titanium were evaluated to determine the weakest zone of the titanium-porcelain bonding structures. Tensile bond tests were performed for these specimens (NO, DU, and VI) and for Ni-Cr alloy-porcelain bonding samples that served as controls. The maximum bond strengths between porcelain and titanium and the Ni-Cr alloy subjected to different metal surface treatments were compared. Sand blasting effectively increased bond strengths in titanium-porcelain bonding materials. No statistically significant differences in the maximum bond strengths were found between the NO sample and a control; however, sample NO exhibited greater maximum bond strength than DU and VI samples. The bond strengths increased with increasing area fractions of porcelain failure on fracture surfaces. The weakest zones were investigated based on the oxygen chemical states determined by electron spectroscopy for chemical analysis, which include bridging oxygen (Si-O-Si), nonbridging oxygen (Si-O~(?) M~(+)), and titanium oxide (O~(2?)) states. We concluded that the titanium oxide layer is the weakest zone of titanium-porcelain bonding structures.
机译：对三种与钛结合的市售瓷器进行了评估，以确定钛瓷结合结构的最弱区域。对这些样品（NO，DU和VI）以及用作对照的Ni-Cr合金-瓷结合样品进行了拉伸结合测试。比较了经过不同金属表面处理的瓷与钛以及Ni-Cr合金之间的最大结合强度。喷砂有效地提高了钛瓷结合材料的结合强度。在NO样品和对照之间，在最大结合强度上没有统计学上的显着差异。但是，样品NO的最大结合强度比DU和VI样品高。结合强度随着断裂表面上瓷破坏的面积分数的增加而增加。根据电子光谱确定的氧化学状态，对最弱的区域进行了化学分析，包括桥接氧（Si-O-Si），非桥接氧（Si-O〜（？）M〜（+）和钛氧化物（O〜（2？））态。我们得出的结论是，氧化钛层是钛瓷结合结构中最薄弱的区域。

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