Skip to main content
OpenTrials
Active, Not Recruiting

NCT Number: NCT07320729

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

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.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Notify Me

Key information

Conditions

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

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Assiut University

Asyut, Asyut Governorate, 71111, Egypt

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Completely edentulous arch to receive 4-6 implants. Candidate for immediate loading with a one-piece fixed prosthesis. ASA I or II medically healthy patients. Patient able to attend follow-up visits and sign informed consent.

Exclusion criteria

Medically compromised patients (ASA III or higher). Poor oral hygiene or heavy smokers. Insufficient bone volume for implant placement. Uncooperative patients or those refusing participation.

Treatment and study plan

Intraoral Optical Scanner

Device

Digital intraoral scanning of implant positions using standard scan bodies for complete-arch implant impressions.

Intraoral Photogrammetry Scanner Elite (Shining3D)

Device

Intraoral photogrammetric capture of implant coordinates using scan flags, combined with soft tissue scanning, without stitching.

Primary outcomes

  1. Trueness of Implant Position (3D Euclidean Deviation)

    Time frame: 3 Months

    The primary outcome is to evaluate the clinical performance of conventional intraoral scanners (IOS) and intraoral photogrammetry scanners (IPS) in immediate complete arch implant loading for each patient enrolled in the study, with a paired comparison of the deviation differences (Degree of Trueness).

Secondary outcomes

  1. Effect of Arch Type on Digital Impression Trueness

    Time frame: 3 Months

    The secondary outcome is to analyze the potential effect (correlation) of the type of arch (maxilla vs. mandible) on the degree of trueness. Also, the scanning time of the 2 techniques will be compared.

Sponsors and collaborators

Lead sponsor

Abdelrahman Khalaf Eldabe

Other

Registry information

Official study title

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

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Jan 6, 2026
Registry last updated
Jan 6, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.