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http://dx.doi.org/10.4047/jkap.2019.57.2.95

Effects of primers on the microtensile bond strength of resin cements to cobalt-chromium alloy  

Jung, Hong-Taek (Institute for Clinical Dental Research, Korea University Medical Center, Korea University)
Campana, Shiela A. (Institute for Clinical Dental Research, Korea University Medical Center, Korea University)
Park, Jin-Hong (Institute for Clinical Dental Research, Korea University Medical Center, Korea University)
Shin, Joo-Hee (Institute for Clinical Dental Research, Korea University Medical Center, Korea University)
Lee, Jeong-Yol (Institute for Clinical Dental Research, Korea University Medical Center, Korea University)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.57, no.2, 2019 , pp. 95-101 More about this Journal
Abstract
Purpose: The aim of this study is to evaluate the effects of various primers on the microtensile bond strength (${\mu}TBS$) of resin cements to cobalt-chromium (Co-Cr) dental casting alloy. Materials and methods: Four adhesive primers (Universal primer, Metal primer II, Alloy primer, and Metal/Zirconia primer) and two resin cements (Panavia F2.0, G-CEM LinkAce) were tested. One hundred fifty Co-Cr beams were prepared from Co-Cr ingots via casting ($6mm\;ength{\times}1mm\;width{\times}1mm\;thick$). The metal beams were randomly divided into ten groups according to the adhesive primers and resin cements used; the no-primer groups served as the control (n = 15). After sandblasting with aluminum oxide ($125{\mu}m$ grain), the metal and resin cements were bonded together using a silicone mold. Prior to testing, all metal-resin beams were examined under stereomicroscope, and subjected to the ${\mu}TBS$ test. The mean value of each group was analyzed via one-way ANOVA with Tukey's test as post hoc (${\alpha}=.05$) using SPSS software. Results: The mean ${\mu}TBS$ of all groups was ranged from 20 to 28 MPa. There is no statistically significant difference between groups (P > .05). Mixed failure, which is the combination of adhesive and cohesive failures, is the most prevalent failure mode in both the Panavia F2.0 and G-Cem LinkAce groups. Conclusion: The ${\mu}TBS$ of all tested groups are relatively high; however, the primers used in this study result in no favorable effect in the ${\mu}TBS$ of Panavia F2.0 and G-Cem LinkAce resin cement to Co-Cr alloy.
Keywords
Bond strength; Metal alloy; Resin cement; Primer;
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Times Cited By KSCI : 3  (Citation Analysis)
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