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首页> 外文期刊>Brazilian Journal of Oral Sciences >Shear bond strength of dental ceramics to cast commercially pure titanium
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Shear bond strength of dental ceramics to cast commercially pure titanium

机译：牙科陶瓷在铸造纯钛时的剪切粘结强度

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Aim: The objective of this study was to evaluate the bond strength of four dental ceramics to commercially pure titanium. Methods: To measure the resistance of metal-ceramic bonding, ceramic rings (Noritake Ti22?, Triceran?, IPS?, Noritake EX-3?) were made around metal rods fused to commercially pure titanium. The area of metal-ceramic union was measured and, after mounting in type III plaster, the rings were subjected to a shearing force in a universal testing machine at a crosshead speed of 2 mm/s until failure occurred. The metal-ceramic shear bond resistance was calculated in MPa. Results: The shear bond strength means for the ceramics Triceram and Noritake Ti22 (42.50 MPa and 61 MPa, respectively) were higher than the minimum value required by the DIN 13927 standard (25 MPa). The ceramics IPS and Noritake EX3, although not specifically formulated for titanium, also had shear bond strength means above the ISO-recommended value (38.47 MPa and 29.04 MPa, respectively); however, there cracks in some specimens after burning and detachment of the ceramic from the metal. Conclusions: The ceramic Noritake Ti22 should be indicated for the commercially pure titanium casting due to its higher mean bond resistance compared to other ceramics utilized.
机译：目的：本研究的目的是评估四种牙科陶瓷与商业纯钛的粘结强度。方法：为了测量金属-陶瓷结合的电阻，在融合有商业纯钛的金属棒周围制作了陶瓷环（Noritake Ti22？，Triceran？，IPS？，Noritake EX-3？）。测量金属-陶瓷结合的面积，然后将其安装在III型灰泥中，然后在万能试验机中以2 mm / s的十字头速度将其承受剪切力，直到发生破坏。金属-陶瓷的抗剪切粘结性以MPa计算。结果：陶瓷Triceram和Noritake Ti22的剪切粘结强度平均值（分别为42.50 MPa和61 MPa）高于DIN 13927标准所要求的最小值（25 MPa）。陶瓷IPS和Noritake EX3，虽然不是专门为钛而配制的，但其剪切粘结强度均高于ISO推荐值（分别为38.47 MPa和29.04 MPa）。但是，某些样品在燃烧并从金属上脱离后会出现裂纹。结论：Noritake Ti22陶瓷应用于商业纯钛铸件，因为它比其他使用的陶瓷具有更高的平均粘结强度。

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