Comparison of the reverse scan technique with an intraoral scanner and the traditional impression technique.

Statement Of Problem: Intraoral scanners have many advantages but have limited applicability for extensive tooth-supported or implant-supported prostheses because of merging errors.

Purpose: The purpose of this study was to compare the reverse scan technique (RST) with an intraoral scanner using the traditional impression technique both in vitro and in vivo.

Material And Methods: A participant was scanned 10 times with an intraoral scanner.

Reverse scan technique: A verification method for the implant position in intraoral scans.

This article describes a fully digital method of verifying and increasing the accuracy of the position of implants in extensive prosthetic restorations. This cost-effective, timesaving, and versatile procedure uses a laboratory scanner, a scannable implant analog, and a printed interim implant-supported prosthesis to refine the virtual definitive cast.