Dental impressions are used to create a record of a person's teeth and oral structures. Conventional impressions are made using impression material placed in a tray, whereas digital impressions are obtained using an intraoral scanner.
This randomized clinical trial compared conventional alginate impressions with digital intraoral scanning using the TRIOS 3 and Medit i700 scanners among dental students aged 18 to 24 years. Participants were randomly assigned to one of the three impression techniques. Each participant underwent recording of both the upper and lower dental arches using the assigned technique.
The study primarily compared the chairside time required for each technique and the participants' experience immediately after the procedure. Comfort, nausea, breathing, pain, dry-mouth sensation, perceived procedure speed, overall satisfaction, and preference for conventional or digital impressions were also evaluated.