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Marginal castability of two different materials (a comparative study).

Achieving a clinically acceptable margin is a conspicuous objective to any practicing dentist. The main concern is the space existing between the margin of the prepared tooth and that of the final restoration. Marginal fit has been measured and evaluated in a variety of methods., and a gap of approximately 50 microns is usually considered acceptable. While inlay wax is the material commonly used in the wax-up stage when fabricating crowns and bridges, Duralay (methylmethacrylate) is a material widely used nowadays in the field of fixed prosthodontics. Due to the ease of using this material intra-orally to form margins, an attempt is made to compare the castability of margins made out of inlay wax to the ones made out of Duralay.