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Histopathology and special staining techniques were used to study the interface tissue removed at the time of implant extraction. Seventy eight such cases were studied spread over a period of twenty years. Fibrous tissue at interface was the most common finding in the most of the uncomplicated cases. Granulation tissue and neutrophils at the interface were hall marks of infection. Different type of metal debris are found in varying amounts in different cases. Special stains were found to be very useful in highlighting various histopathological changes.