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Microleakage Comparison of Amalgam-Composite Interface and Dentin-Composite Interface, the Two Surfaces Formed During the Defective Amalgam Margin Repairs with Bulk-Fill Resin Composite

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Technical Report

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Uniformed Services University of Health Sciences Bethesda United States

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Objective To compare micro leakage of amalgam-composite and tooth-composite interfaces, two surfaces formed and bonded during defective amalgam repair using Bulk-fill composite. Materials and methods 25 extracted human molars were used for this research project Prepared for two occlusalO cavities each has approximately2.7mmWX2.7mmLX2.7mmH dimension first cavity was prepared and filled with amalgam initially one day later, the second cavity was prepared and filled to simulate a clinical repair using two different resin composite materials 13 Bulk-fill compositeSDR restoration sample as test group vs. 12 packable resin compositeTPH restoration sample as a control group. All samples were stored in the distilled water at 25 degree Celsius for 60 hours, then they were placed in methylene blue dye solution for one hour the samples were sectioned with slow speed isomet saw, and dye penetrations were assessed and compared at amalgam-composite interface and tooth-composite interface for both test and control groups.

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  • Medicine and Medical Research

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