الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
This study was to assess the accuracy of the vinyl siloxanether impression in two different span lengths (short, long). Material and Methods: Two stainless steel master model designs were fabricated. The first model simulated a short span clinical situation and the second, a long span case. Each model consisted of two stainless steel dies simulating prepared abutments to receive full coverage fixed partial denture (FPD). Ten impressions of each material Vinyl polysiloxan(VPS) and Vinyl siloxanether (VSE) were made for each of the two models.