Comparison of Shear Bond Strength between Composite Resin and Resin Modified Glass Ionomer with Different Bondings

Document Type : Original Article


1 Assistant Professor of Operative Dentistry

2 School of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.


Background and Objectives: The aim of this study was to compare shear bond strength between composite and resin-modified glass ionomer (RMGI) by different adhesive systems using sandwich technique
Subjects and Methods: In this experimental research, A total of 60 square bloc of
RMGI (1×1cm) and a thickness of 5mm were divided into 5 groups.Cylinders of composite resin with a diameter of 2.5mm and the height of 5mm were bonded to RMGI with scotch bond multi purpose, single bond, clearfil SE    bond and G bond.which were allocated as groups 2 to 5?. The first group was used the control .All samples were tested by a Universal testing machine with a strainrate of 1 mm/min Data was analysed with one way ANOVA and Tukey test at a significance level of <0.05 Failure mode was assessed under a stereo-microscope.
Result: The averages of shear bond strength values for groups 1 until 5 were 4.95, 13.40, 13.79, 21.28, 16.73 Mpa, respectively.Variance analysis showed that there were a significant statistical differences between which group and which. and Tukey test showed that there is a significant difference between different groups, except between group 2 and 3.
Conclusion: Shear bond strength of RMGI to composite increased significantly with the use of adhesive system. The bond strength of RMGI to composite could vary depending upon the type of adhesive system used. Self etch primer adhesives system created higher shear bond strength.


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