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A material used to smooth or roughen a softer material by mechanical wear. It may be delivered in a high pressure stream of air (air abrasion) or by adhesion to strips, discs, wheels, or points. An abrasive strip (finishing strip) consists of a piece of linen, acetate, or thin metal of varying width coated on one or both sides with abrasive grit of differing textures. It is used for smoothing and contouring the proximal surfaces of restorations.

Subjects: Dentistry.

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