Statement of problem

Intraoral scanning of complete arch implant-supported prosthesis is still not predictable in all scenarios. Photogrammetry was introduced to overcome physical and anatomic limitations. The use of a new intraoral scanner combined with photogrammetry technology in a simplified workflow may improve the ease of fabrication and accuracy of complete arch implant-supported prostheses.

Purpose

The purpose of this clinical study was to evaluate the degree of trueness of a conventional intraoral scanner (IOS) and an intraoral photogrammetry scanner (IPS) for complete arch implant-supported prostheses.

Material and methods

Participants who had received 4 implants in an edentulous arch for an implant-supported complete arch fixed dental prosthesis were recruited. Three recordings were obtained for each participant: IOS, IPS (tests), and a conventional splinted open-tray impression (reference …