Effect of preparation methods on the metal-porcelain bond strength of Co-Cr alloys

VernacularTitle:制作方法对钴铬合金金瓷结合性能的影响
Author: Jie LIU ¹ ; Shuai CHI ; Jin XU ; Yanyan WANG ; Desong ZHAN
Author Information

1. 中国医科大学口腔医学院修复科
Keywords: Co-Cr alloy; shear bond strength; selective laser melting; casting
From: West China Journal of Stomatology 2014;(2):115-118
CountryChina
Language:Chinese
Abstract: Objective To compare the shear bond strength(SBS) of cast Co-Cr alloys and selective laser melting(SLM) Co-Cr alloys with those of dental porcelain. Methods A dental porcelain (Vita) was applied on cast and SLM Co-Cr alloy specimens(n=10). SBS test was conducted, and fracture mode analysis was determined. Student’s t-test by SPSS 13.0 soft- ware was employed to analyze the data. Results The SLM Co-Cr alloy specimens had lower SBS values than the cast Co-Cr alloy specimens (P>0.05). The metal-porcelain bond strength value of the cast group was (33.11±4.98) MPa, and that of the SLM group was (30.94±5.98) MPa. The specimens in both test groups exhibited mixed failure. Conclusion The metal-porcelain system processed by SLM exhibit a bond strength that is similar to that of the cast group. This system also display a high precision.