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Quintessence Publishing: Journals: JAD

 

The Journal of Adhesive Dentistry

Edited by Jean-François Roulet

ISSN (print) 1461-5185 • ISSN (online) 1757-9988

Publication:

September/October 2009
Volume 11 , Issue 5



Pages: 375 - 380
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Bond Strength of Composite Core Build-up Materials to Fiber-reinforced Posts: A Microtensile Comparison Between Conventional and Wet-ethanol Bonding Systems

Ounsi, Hani F. / Salameh, Ziad / Carvalho, Carlos Augusto / Cantoro, Amerigo / Grandini, Simone / Ferrari, Marco

Purpose: To evaluate the interfacial microtensile bond strength between a fiber-reinforced post (Rely X Post) and a core material (Multicore Flow) after placing different bonding agents. Materials and Methods: After post surface treatment, 50 posts were divided into 5 groups. Group 1: Adper Prompt-LPop; group 2: SingleBond2; group 3: ScotchBond Multipurpose Plus; group 4: experimental bonding system (wet ethanol bonding technique); group 5: control group. After core reconstruction, the samples were tested with the microtensile test. Fracture type examination and SEM observation followed. Data were statistically analyzed with Kruskall-Wallis non-parametric ANOVA. Results: Microtensile testing revealed significant differences (p < 0.001). There were no differences between groups 1 to 4, but there was a statistically significant difference between groups 1 to 4 and the control. Fracture type observations revealed more adhesive failures than cohesive or mixed ones. Conclusion: The experimental bonding technique did not improve bond strength compared to the different adhesive systems tested. However, placing a bonding agent beween the post and the core seems to significantly increase microtensile bond strength.

Keywords: adhesion, fiber post, wet-ethanol bonding, interface

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