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International Journal of Dentistry
Volume 2014, Article ID 231235, 7 pages
Research Article

The Effect of Different Disinfecting Agents on Bond Strength of Resin Composites

1Al-Farabi College, King Abdullah Road East, Ishbilia, P.O. Box 85184, Riyadh 11691, Saudi Arabia
2Department of Operative Dentistry, Al-Azhar University, Assiut, Egypt

Received 24 July 2014; Revised 30 September 2014; Accepted 28 October 2014; Published 13 November 2014

Academic Editor: Carlos A. Munoz-Viveros

Copyright © 2014 Ahmed Mohammed Hassan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. The aim of this study was to evaluate the effect of different disinfectant agents on bond strength of two types of resin composite materials. Methods. A total of 80 sound posterior teeth were used. They were divided into four groups according to the dentin surface pretreatment (no treatment, chlorhexidine gluconate 2%, sodium hypochlorite 4%, and EDTA 19%). Each group was divided into two subgroups according to the type of adhesive (prime and bond 2.1 and Adper easy one). Each subgroup was further divided into two subgroups according to the type of resin composite (TPH spectrum and Tetric EvoCeram). Shear bond strength between dentin and resin composite was measured using Universal Testing Machine. Data collected were statistically analyzed by t-test and one-way ANOVA followed by Tukey’s post hoc test. Results. It was found that dentin treated with EDTA recorded the highest shear bond strength values followed by sodium hypochlorite and then chlorhexidine groups while the control group showed the lowest shear bond strength. Conclusions. The surface treatment of dentin before bonding application has a great effect on shear bond strength between resin composite and dentin surface.