NCT07320729

Accuracy of Intraoral Photogrammetry vs Optical Scanners for Immediate Full-Arch Implant Loading

Can Intraoral Photogrammetry Overcome Surgical Field Challenges? An In-Vivo Accuracy Study in Immediate Full-Arch Loading

• Status: Active Not Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 4 (estimated)
• Sponsor: Abdelrahman Khalaf Eldabe · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

This prospective in vivo clinical trial evaluates and compares the accuracy (trueness) and scanning time of intraoral photogrammetry scanners (IPS) versus conventional intraoral optical scanners (IOS) for immediate full-arch implant impressions. The reference standard will be a verified conventional splinted open-tray impression taken at the uncovering stage. Sixty edentulous arches receiving 4-6 implants will be included. Linear, angular, and 3D Euclidean deviations will be calculated to assess accuracy.

Detailed description

Digital impression systems are widely used for implant dentistry, but complete-arch implant scans remain challenging due to lack of stable landmarks and intraoral movement. Photogrammetry technology captures implant coordinates with high trueness by eliminating stitching errors and excluding unstable soft tissue. A newly introduced intraoral photogrammetry scanner (IPS) integrates photogrammetry and intraoral imaging in a single device. This study is the first in-vivo prospective clinical trial comparing IOS and IPS accuracy in immediate complete-arch implant loading. Patients receiving 4-6 implants in one arch will undergo two digital impressions immediately after surgery: one using IOS (AoralScan 3) and one using IPS (Elite). A conventional splinted open-tray impression at second-stage surgery will be used as the reference model. Digital files will be superimposed to calculate linear, angular, and 3D (Euclidean) deviations. Scanning time and effect of arch type will also be evaluated.

Conditions

• Edentulism
• Implant-supported Full-arch Prosthesis
• Digital Impression Accuracy
• Photogrammetry in Dentistry

Interventions

Type	Name	Description
DEVICE	Intraoral Optical Scanner	Digital intraoral scanning of implant positions using standard scan bodies for complete-arch implant impressions.
DEVICE	Intraoral Photogrammetry Scanner Elite (Shining3D)	Intraoral photogrammetric capture of implant coordinates using scan flags, combined with soft tissue scanning, without stitching.

Timeline

• Start date: 2025-12-07
• Primary completion: 2026-05-01
• Completion: 2026-05-01
• First posted: 2026-01-06
• Last updated: 2026-01-06

Locations

1 site across 1 country: Egypt