An observational study in Edentulous Jaw, sponsored by Menoufia University. Completed at 1 site in Egypt. Open to participants aged 18 Years to 50 Years. Per ClinicalTrials.gov, last updated 2026-09-16.
Sponsored by Menoufia University · Observational
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.
Accurate recording of implant positions is essential for the passive fit and long-term success of complete-arch implant-supported prostheses. Photogrammetry-based technologies have emerged as promising alternatives to conventional digital impression techniques for capturing implant positions with high accuracy. While intraoral photogrammetry systems have demonstrated favorable results, the clinical performance of recently introduced mobile-phone-based photogrammetry systems remains insufficiently investigated.
This prospective comparative clinical study aims to evaluate 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 restored with complete-arch implant-supported prostheses. Each participant will undergo implant scanning using both systems according to the manufacturers' recommendations. The resulting digital datasets will be compared with a reference dataset to determine scan accuracy.
The primary outcome measures will be linear and angular discrepancies between the implant positions captured by each photogrammetry system and the reference dataset. Secondary outcome measures will include the chairside time required for scan acquisition. Statistical analyses will be performed to compare the accuracy and efficiency of the evaluated systems.
171 studies on the registry are indexed under Jaw, Edentulous; 24 are open to participants now.
This study's enrollment of 24 is below the median of 40 across 25 observational studies indexed under Jaw, Edentulous.
Browse Jaw, Edentulous studies →Menoufia University is the lead sponsor of 192 studies on the registry; 53 are open to participants now.
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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.
Exclusion Criteria:
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)
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
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
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
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.
Time frame: Immediately after scan acquisition and digital analysis (same study visit).
Plan to share: No — Up on resonable request from the corresponding author
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This study is completed, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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Menoufia University