Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Operative Dentistry

This current in vitro study was carried out to evaluate the effect of crosslinking and electrobonding on the microshear bond strength of resin composite to dentin. Twenty intact human premolar teeth that were extracted for orthodontic purposes were used. After adequate surface debridement, the teeth were divided into two equal groups (10 each) according to the application of the crosslinking agent (C) (Grape seed extract). In group C0, the crosslinking agent was not applied, which is the control group, while in group C1, the crosslinking agent was applied. Each group was further subdivided into 2 subgroups (5 teeth each) according to electric current application during bonding (E); where in subgroup E0, no electric current was applied, while in subgroup E1, an electric current was applied. Then the restorative material was applied according to the manufacturer instructions. Microshear bond strength was measured using a universal testing machine

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