RecruitingNCT07643441

Accuracy of Complete-Arch Implant Photogrammetry

Accuracy of Complete-arch Implant Scans Obtained Using Intraoral Photogrammetry and a Mobile-phone Based Photogrammetry.

Sponsor

Menoufia University

Enrollment

42 participants

Start Date

Jan 1, 2026

Study Type

OBSERVATIONAL

Conditions

Edentulous Jaw

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.

Eligibility

Min Age: 18 YearsMax Age: 50 Years

Inclusion Criteria5

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.

Exclusion Criteria7

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.

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Interventions

DEVICEIntraoral Photogrammetry (IPG)

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.

DEVICEMobile-Phone-Based Photogrammetry

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.