NCT07200440

Comparative Accuracy of Conventional Scan Bodies, Intra-oral Photogrammetry, and Calibrated Scan Flags in Full-Arch Implant Scanning

Comparative Accuracy of Conventional Scan Bodies, Intra-oral Photogrammetry, and Calibrated Scan Flags in Full-Arch Implant Scanning: An In-Vitro Study

• Status: Not Yet Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 24 (estimated)
• Sponsor: Cairo University · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

To assess and compare the accuracy of digital scans obtained using three different scanning protocols -conventional scan bodies, Intra-oral photogrammetry, and calibrated scan flags- on completely edentulous dental model with full-arch implants.

Detailed description

Digital scans have revolutionized prosthetic workflows by offering increased efficiency and accuracy compared to conventional techniques . Studies highlight that their accuracy depends on the scanning protocol and equipment used. Conventional scan bodies, which are well-established and commonly used for digital scans, are generally reliable; however, their accuracy can be influenced by factors such as angulation, the number of implants, and the scanning technique. Intra-oral photogrammetry has gained attention for its ability to accurately record implant positions without relying on physical scan bodies . Many systems utilize this technology to improve accuracy, particularly in complex full-arch cases, though direct comparisons with other methods remain limited. Calibrated Scan Flags represent a novel approach, incorporating enhanced features to reduce errors associated with angulation and improve the capture of implant positions. While initial studies suggest improved precision, further comparative data are required . Previous research comparing these methods often focuses on isolated factors, such as time efficiency or user preferences, with limited emphasis on accuracy. Therefore, a direct comparative analysis of these three scanning protocols is needed to address this gap.

Conditions

• Accuracy of Different Scanning Techniques

Interventions

Type	Name	Description
PROCEDURE	Intervention 1	Digital scans using conventional scan bodies scanned with an intra-oral scanner.
PROCEDURE	Intervention 2	Digital scans using intra-oral photogrammetry scanned with an intra-oral scanner.
PROCEDURE	Intervention 3	Digital scans using calibrated scan flags scanned with an intra-oral scanner.
PROCEDURE	Control	Digital scans using conventional scan bodies scanned with a desktop scanner.

Timeline

• Start date: 2025-12-20
• Primary completion: 2026-02-20
• Completion: 2026-03-20
• First posted: 2025-10-01
• Last updated: 2025-10-01