Bezzon O L, de Mattos M da G, Ribeiro R F, Rollo J M
School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil.
J Prosthet Dent. 1998 Nov;80(5):570-4. doi: 10.1016/s0022-3913(98)70034-4.
Castability and ceramometal bond resistance play an important role in accepting nickel-chromium alloys as a substitute for gold alloys in dentistry.
This study was developed to verify the effect of beryllium on these factors in several compositions of nickel-based alloys by submitting them to castability and ceramometal bonding resistance tests.
Three experimental compositions of Ni-Cr alloys with different amounts of beryllium were used. One beryllium-free alloy was used as the control.
Analysis of variance and Tukey's test showed significant differences (alpha = .001) for the castability test results and significant differences (alpha = .05) for ceramometal bond resistance between alloys.
Although the amounts of chromium, manganese, and niobium were maintained, the variations in the amounts of beryllium allowed the estimation that Be-containing alloys presented better castability than Be-free alloys. The 0.9% Be-containing alloy demonstrated higher resistance of the ceramometal bond than the Be-free alloy.
铸造性能和烤瓷合金结合强度在牙科用镍铬合金替代金合金方面起着重要作用。
本研究旨在通过对几种镍基合金成分进行铸造性能和烤瓷合金结合强度测试，验证铍对这些因素的影响。
使用了三种含不同铍含量的镍铬合金实验成分。一种无铍合金用作对照。
方差分析和Tukey检验表明，合金间铸造性能测试结果存在显著差异（α = 0.001），烤瓷合金结合强度也存在显著差异（α = 0.05）。
尽管铬、锰和铌的含量保持不变，但铍含量的变化表明含铍合金的铸造性能优于无铍合金。含0.9%铍的合金烤瓷合金结合强度高于无铍合金。
