Anatomic and tripod landmark-based implant scanning workflows for fabricating complete arch implant-supported prostheses using extraoral and intraoral photogrammetry systems.

Abstract

The accuracy of implant scanning techniques has been analyzed; however, the studies describing implant scanning workflows based on the conditions of the patient, design of the planned implant prosthesis, and implant scanning technique selected are scarce. This manuscript describes 2 implant workflows for fabricating complete arch implant-supported prostheses in which an extraoral and intraoral photogrammetry systems were used to record implant positions. A tripod landmark-based workflow composed of an existing tooth and 2 temporary anchorage devices and an anatomic landmark-based workflow are described in different treatment phases to register the scans of the implant workflows and fabricate the interim and definitive prostheses.