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Comparison of the Fit of Lithium Disilicate Crowns made from Conventional, Digital, or Conventional/Digital Techniques

First published: 08 August 2018 https://doi.org/10.1111/jopr.12961 Abstract Purpose To evaluate the fit of single crowns fabricated using conventional, digital, or cast digitization methods.
Materials and Methods One subject with a peg‐shaped maxillary lateral incisor was selected in this study. Tooth preparation for an all‐ceramic crown was performed and 10 conventional poly(vinyl siloxane) impressions, and 10 digital impressions using an intraoral scanner were made. Each working cast was scanned using a laboratory scanner and an intraoral scanner. Four groups were tested Group 1: conventional impressions. Group 2: cast laboratory scans. Group 3: cast scans using intraoral scanner. Group 4: direct intraoral scans. For group 1, heat‐pressed glass ceramic crowns (IPS e.max Press) were fabricated using casts produced from the conventional impressions. For…

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