Available online 22 March 2023

In complete arch implant rehabilitation, one of the greatest difficulties still encountered in the digital workflow is the deviation of the implant position during intraoral scanner (IOS) data acquisition. As a result, the passivity of a definitive prosthesis fabricated using IOS data might be compromised. Thus, an implant position verification method is essential, either digitally or conventionally executed. A fully digital protocol for the fabrication of the definitive fixed prosthesis for completely edentulous patients, without the interference of any conventional step within the digital process, is presented. For the verification of the captured position of the scan-bodies, novel scan analogs were connected to the interim prosthesis extraorally and scanned. The virtual superimposition of the interim prosthesis intraorally with the same prosthesis extraorally served as a verification device for the position of the implants.

1. Fabricate and deliver a removable denture, conventionally or digitally, for the evaluation of all the parameters, esthetic and functional, if the existing one is not correct (Fig. 1). Scan the denture, digitally modify the intaglio surface by removing the buccal flange and palatal extension, and provide a flat intaglio surface. Make perforations digitally according to the emergence of the virtual abutments of the implant planification and fabricate the interim prosthesis (polymethyl

A step-by-step, fully digital protocol for the fabrication of a complete arch implant-supported prosthesis is described. Its novelty is that the verification method for the prosthesis passivity is fully digital and that no additional devices are required. This protocol can be used for patients where the interim prosthesis is fabricated intraorally by connecting the implant connection with the prosthesis. The technique is similar to the conventional method, where the interim prosthesis is

The present article presents a step-by-step, digital workflow for complete arch fixed implant-supported prostheses. This protocol verifies the 3D implant position without the interference of an analog step, simplifying the prosthetic procedure for both clinician and dental laboratory technician.

Giolanta M. Liaropoulou: Writing – original draft, Project administration. Phophi Kamposiora: Supervision. Jorge Bertos Quílez: Methodology, Supervision. Oriol Cantó-Navés: Methodology, Supervision. Pindaros G. Foskolos: Conceptualization, Writing – review & editing.

The authors thank Odontecnic S.L. Lab for their CAD-CAM supports and fabrication of the prosthesis. The authors also thank Dr Panos Papaspyridakos for his assistance in preparing this manuscript.

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© 2023 by the Editorial Council for the Journal of Prosthetic Dentistry.