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Abstract The aim of this in vitro study was to evaluate the accuracy of stone die obtained from a polyvinyl siloxane elastomeric impression material using: Two different techniques, namely: The one-step double mix, and The two-step double mix And comparing: Three different abutment positions, namely: Single crown preparation on maxillary right second premolar, Three-unit FPD replacing missing maxillary right first molar, and Five-unit FPD replacing missing maxillary right first molar and first premolar. |