Precision of Digital Impressions in Complete-Arch Implant Rehabilitation: Evaluation of Two Digital Techniques

Clinical Evaluation of the Complete Arch Digital Impressions Accuracy Using Photogrammetry and Intraoral Scanning

This clinical trial evaluates the accuracy of two digital impression techniques intraoral photogrammetry and intraoral scanning in patients rehabilitated with full-arch implant-supported prostheses (All-on-4 and All-on-6 concepts).

The study aims to evaluate and compare two digital impression techniques, intraoral scanning and intraoral photogrammetry methods in terms of precision, accuracy (using conventional impression technique as reference), and passive fit of complete-arch implant supported restorations. The trial is an in vivo comparative study with direct 3D deviation analysis and evaluation.

Inclusion Criteria:

• Adults ≥18 years
• Edentulous maxilla or mandible
• All-on-4 or All-on-6 implant supported restoration
• Ability to provide informed consent

Exclusion Criteria:

• Severe systemic diseases (ASA III+)
• Bisphosphonate therapy
• Heavy bruxism
• Inability to attend follow-up