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:: Volume 11, Issue 2 (September- 2022) ::
Caspian J Dent Res 2022, 11(2): 115-123 Back to browse issues page
Evaluation of micro-shear bond strength of composite to amalgam using different bonding systems
Narges Mirzania , Elham Zajkani , Armaghan Naghili *
, Department of Restorative Dentistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran. , armaghan_n2003@yahoo.com
Abstract:   (379 Views)
Introduction: Recently, a new category of dental bonding agents called universal adhesives has been introduced to the market, which are claimed to be able to create a strong bond between composite resins and teeth, metal surfaces and all types of ceramics alone and without the use of other primers. The aim of this study was to evaluate the performance of universal adhesives in the repair of amalgam restorations with composite resins in comparison with the conventional method.
Material & Methods: In this experimental in vitro study, 80 amalgam blocks were prepared and after abrading the surface with an intraoral sandblaster and performing the aging process, the specimens were divided into 4 groups of 20 each, depending on how each surface was prepared by different bonding in the following order: Single Bond2 (S), Alloy Primer and Single Bond (AS), G-Premio Bond (G) and Alloy Primer and G-Premio Bond (AG). The composite blocks were then cured on the surface of the specimens. Finally, the specimens were tested for micro-shear bond strength (µSBS) using a micro-tensile tester and their cross-section was examined for fracture pattern under a stereomicroscope. Data were analyzed using Kruskal-Wallis, Man Whitney, and chi-square tests. A value of P<0.05 was considered significant.
Results: The highest and lowest bond strengths belonged to the AG and S groups, respectively. The mean difference of µSBS in the four groups was significant, except in the AS and G groups.
Conclusion: G-Premio universal bond is able to create sufficient bond strength between composite and amalgam. However, it is recommended to use a combination of Alloy Primer with all bonding systems to improve bond strength.

 
Keywords: Dental Amalgam, Composite Resins, Shear Strength
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Type of Study: Research Paper | Subject: Restorative Dentistry
* Corresponding Author Address: Dental Faculty, Tabriz Branch, Islamic Azad University,Basmenj,Tabriz, Iran.
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Mirzania N, Zajkani E, Naghili A. Evaluation of micro-shear bond strength of composite to amalgam using different bonding systems. Caspian J Dent Res 2022; 11 (2) :115-123
URL: http://cjdr.ir/article-1-387-en.html


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Volume 11, Issue 2 (September- 2022) Back to browse issues page
مجله تحقیقات دندانپزشکی کاسپین Caspian Journal of Dental Research
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