IRCT20201011048994N1 IRCT 2021-01-26 Shiraz University of Medical Sciences marginal fit of monolithic zirconia FPD Clinical evaluation of marginal fit of monolithic zirconia FDP, using scan able and conventional polyvinyl siloxane impression materials 2020-10-18 anticipated 10 Complete https://irct.ir/trial/51626 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Diagnostic. N/A clinical evaluation of marginal fit. Intervention group: From 10 prepared teeth, a mold is prepared by a one-step putty-wash technique. According to the manufacturer's instructions, first two putty poly-vinyl siloxane scan capable pastes are mixed and placed inside, and then the light material by The gun is injected into it and a tray is placed in the mouth and sufficient pressure is applied until the final set and the resulting molds are scanned by a scanner (3ShapeD810; 3Shape) SD laser scanned. Control group: For every 10 people in the same session, a mold is taken with putty poly-vinyl siloxane conventional material and then light material is taken on it with the same steps as with added silicone material (Panasil putty soft and initial contact light, Kettenbach, Eschenburg, Germany ) Is used. And then its gypsum cast is poured by Stone Dye Type IV gypsum. (GC Fujirock, GC corporation, leuven, Belgium). In the molds of the second group, in order for the surfaces of these dies to be able to be scanned, they are sprayed by scanning spray. Yes - There is a plan to make this available What will be shared: All data is potentially shareable after unidentified individuals When: Access period starts 6 months after the results are published To whom: Researchers working in academic and scientific institutions Conditions: There are no special conditions Where to obtain: abbasi_b@sums.ac.ir How to obtain: After reviewing the application and the reasons provided by the applicant, the data files will be sent as a PDF file via email. Comments: