Analysis of additional methods for improving the accuracy of intraoral scanning in edentulous patients for fixed dental prosthesis

The implementation of the intraoral scanner has simplified the workflow of dentists in today's dentistry greatly, offering a fast and accurate alternative to traditional impression-taking methods and significantly streamlining the logistics process between the clinic and the dental laboratory. However, when working with edentulous patients with dental implants, intraoral scanners encounter a number of technical difficulties related to their optical-based capture and post-process algorithms, which can affect the accuracy of the data obtained. Despite progress, full digital workflow still lacks the analog silicone and stone accuracy and trueness in terms of linear and axial positioning of dental implants in casts. Nevertheless, the use of additional data sources during scanning, such as modified scan markers and auxiliary optical landmarks, can improve scan quality.