The composite resin restoration: a literature review. Part II. Comparisons between composite and alloy restorations

Composite resin restorations have been advocated as a posterior restoration for Class II lesions, due to their esthetic quality and lack of mercury content. This report investigates early studies that compared amalgam and composite restorations, and cites their advantages and disadvantages. The various methods previous investigators implemented to assess the longevity of the restorations are also described.