Abstract
Review question / Objective: Is the accuracy (marginal adaptation and / or internal adaptation) of fixed full coverage prostheses made with digital impressions better than conventional impressions? Eligibility criteria: Inclusion criteria• Systematic reviews and / or meta-analyzes that evaluated the precision (marginal adaptation and / or internal adaptation) of full coverage fixed prostheses on natural teeth in clinical studies and on tooth replicas in in vitro studies.• Systematic reviews and / or meta-analyzes comparing digital impressions with an intraoral scanner versus conventional impressions taken with any impression material.• Systematic reviews and / or meta-analyzes of randomized clinical trials (RCTs), prospective comparative and in vitro and non-randomized clinical trials.Exclusion criteria:• Systematic literature reviews, case reports, pilot studies• Studies evaluating the seating of crowns on implants and partial restorations• Studies with no response from the author to the requested information query.
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