Accuracy of Complete-Arch Implant Photogrammetry

NCT07643441 | Recruiting

• 1 other identifier: ADMNF-000026
• Study Type: observational
• Target: 42
• Locations: 1 country
• Sites: 1

Brief Summary

This prospective comparative clinical study evaluated the accuracy and chairside time of complete-arch implant scans obtained using an intraoral photogrammetry system and a mobile-phone-based photogrammetry system in edentulous patients rehabilitated with complete-arch implant-supported prostheses. Implant positions recorded by each system were compared with a reference dataset to assess linear and angular discrepancies. The chairside time required for data acquisition was also measured. The study aimed to determine whether mobile-phone-based photogrammetry can provide clinically acceptable accuracy comparable to that of intraoral photogrammetry while improving clinical efficiency. The findings may help clinicians select appropriate digital impression techniques for complete-arch implant rehabilitation.

Conditions

Edentulous Jaw

Outcome Measures

Primary Outcomes (1)

• Linear Discrepancy of Complete-Arch Implant Scans

  Assessment of the linear deviation (μm) between implant positions captured using intraoral photogrammetry and mobile-phone-based photogrammetry systems and those recorded in the reference dataset. Lower values indicate greater accuracy.

  Immediately after scan acquisition and digital analysis (same study visit).

Study Arms (2)

Intraoral Photogrammetry (IPG)

Participants will undergo complete-arch implant scanning using an intraoral photogrammetry system (IPF Elite, Shining 3D). Implant positions will be digitally recorded according to the manufacturer's instructions. Linear and angular discrepancies relative to the reference dataset, as well as chairside scanning time, will be evaluated.

Device: Intraoral Photogrammetry (IPG)

Mobile-Phone-Based Photogrammetry

Participants will undergo complete-arch implant scanning using a mobile-phone-based photogrammetry system (T-Marker). Implant positions will be digitally recorded according to the manufacturer's instructions. Linear and angular discrepancies relative to the reference dataset, as well as chairside scanning time, will be evaluated.

Device: Mobile-Phone-Based Photogrammetry

Interventions

Mobile-Phone-Based Photogrammetry DEVICE

A smartphone-assisted photogrammetry system used to capture the three-dimensional positions of implants in complete-arch rehabilitations. The system acquires photographic data through coded markers and generates a digital dataset for subsequent accuracy analysis.

Also known as: T-Marker; Extraoral Photogrammetry; Mobile-Phone-Based Photogrammetry System

Mobile-Phone-Based Photogrammetry

Intraoral Photogrammetry (IPG) DEVICE

A photogrammetry-based digital impression system used to capture the three-dimensional positions of implants in complete-arch rehabilitations. The system records implant locations through specialized scan bodies and generates a digital dataset for subsequent accuracy analysis.

Also known as: IPF Elite; Shining 3D; Intraoral Photogrammetry System

Intraoral Photogrammetry (IPG)

Eligibility Criteria

• Age: 18 Years - 50 Years
• Sex: all
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

The study population will consist of adult completely edentulous patients who have been rehabilitated with implant-supported complete-arch prostheses. Eligible participants will present with a fully edentulous arch restored by at least four osseointegrated dental implants and will be recruited from patients seeking prosthodontic treatment and follow-up care at the study center. All participants will undergo complete-arch implant scanning using both an intraoral photogrammetry system and a mobile-phone-based photogrammetry system for comparative evaluation of scan accuracy and chairside acquisition time. Only patients meeting the predefined inclusion criteria and providing written informed consent will be enrolled.

You may qualify if:

• Adults aged 18 years or older.
• Completely edentulous patients rehabilitated with implant-supported complete-arch prostheses.
• Presence of at least four osseointegrated implants in the edentulous arch.
• Patients able to undergo digital implant scanning procedures.
• Patients willing to participate and provide written informed consent.

You may not qualify if:

• Patients with unstable or failed implants.
• Presence of peri-implant disease, active oral infection, or significant soft-tissue inflammation around the implants.
• Inadequate access for placement of photogrammetry scan bodies or markers.
• Patients with conditions that prevent proper scanning procedures (e.g., inability to maintain mouth opening or remain still during data acquisition).
• Patients requiring immediate implant placement or immediate loading protocols.
• Patients unwilling or unable to provide informed consent.
• Incomplete clinical records or inability to complete all study procedures.

Sponsors & Collaborators

• Menoufia University: lead
• Mansoura University: collaborator

Study Sites (1)

Mohammed El-Sawy

Shibīn al Kawm, Menoufia, 2266166, Egypt

RECRUITING

MeSH Terms

Conditions

Jaw, Edentulous

Condition Hierarchy (Ancestors)

Jaw Diseases; Musculoskeletal Diseases; Stomatognathic Diseases; Mouth, Edentulous; Mouth Diseases; Tooth Diseases

Study Officials

• Mohammed A. El-Sawy, PhD

  Menoufia University

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Mohammed El-Sawy, PhD

CONTACT

00201061314522; mohamed.elsawy@dent.menofia.edu.eg

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Dr

Study Record Dates

• First Submitted: June 7, 2026
• First Posted: June 11, 2026
• Study Start: January 1, 2026
• Primary Completion (Estimated): August 1, 2026
• Study Completion (Estimated): August 1, 2026
• Last Updated: June 11, 2026

Record last verified: 2026-06

Data Sharing

• IPD Sharing: Will not share

Locations

EG (1)