Introduction:
Full-arch implant rehabilitations require precise transfer of implant positions to achieve passive fit and ensure long-term prosthetic success. In edentulous cases requiring extraction of all remaining teeth, immediate loading protocols are often preferred to minimize functional impairment and patient discomfort. Conventional impression techniques may introduce distortions, particularly in extensive rehabilitations. Photogrammetry offers a highly precise and efficient method for capturing three-dimensional implant positions, eliminating the inaccuracies and auxiliary aids often associated with conventional and digital impression workflows. This report illustrates the clinical application of photogrammetry in an immediate mandibular full-arch implant rehabilitation.

Materials and Methods:
A 64-year-old patient with severely compromised mandibular dentition due to advanced periodontal disease and generalized tooth mobility underwent extraction of all remaining mandibular teeth. Six implants were simultaneous placed following a conventional surgical protocol. Immediately post-implantation, implant positions were recorded using a photogrammetry system. Scan bodies were connected, and multiple images were captured from various angles to generate a digital three-dimensional map of implant locations. The photogrammetric dataset was merged with intraoral scans of the soft tissues and occlusion to design a CAD/CAM screw-retained provisional prosthesis, which was delivered under immediate loading conditions.

Results:

The provisional prosthesis exhibited an excellent passive fit, confirmed clinically and radiographically. The patient reported immediate improvement in masticatory efficiency, comfort, and esthetics. Following mandibular rehabilitation, maxillary prosthetic treatment was performed using a delayed loading protocol to achieve optimal occlusal balance and esthetic integration.

Discussion and Conclusion:

This case demonstrates that photogrammetry can significantly enhance the accuracy and efficiency of immediate full-arch implant rehabilitation. The method reduces impression-related distortions, eliminates errors from conventional impressions and reduces patient discomfort. Photogrammetry represents a valuable adjunct to contemporary digital implantology protocols, particularly in cases involving immediate loading.