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A dental restoration is a material that has been placed in a prepared tooth to restore function when tooth structure has been lost due to decay or fracture, or to improve the esthetics of the tooth. Dental restorations may be fabricated out of a variety of materials, and come in two broad categories: direct and indirect. Direct restorations are created inside the mouth, while indirect restorations are created outside of the mouth. Common direct restorations include 'silver fillings' or dental amalgams, and 'tooth-colored fillings' or direct composite resin restorations. Common indirect restorations include crowns or veneers.
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