Fixed restorative dentistry requires an impression of the teeth and area to be restored for the laboratory to fabricate the desired restorations. Traditional impressions are still utilized the majority of the time to capture the needed information. Selection of the correct viscosity will vary depending on what prosthesis is to be fabricated, which tray is being used and whether the preparations are on natural teeth or implants. Problems can arise during impression taking that can compromise the ability of the lab to fabricate the restoration or affect the accuracy and fit of the finished prosthesis. Identifying impression problems is part of the process, but how to manage these to improve the quality and accuracy of our impressions is critical to fixed prosthetics.
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