Accuracy of Complete-Arch Implant Photogrammetry
ConditionEdentulous Jaw
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-50
SponsorMenoufia University
About this trial
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 criteria
This trial does not accept healthy volunteersQualifiers
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.
Disqualifiers
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).
Trial 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.
Trial design
Design model
Cohort
Time perspective
Prospective
Treatments tested in this trial
Intraoral Photogrammetry (IPG)
DeviceA 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.
Mobile-Phone-Based Photogrammetry
DeviceA 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.
Treatment groups
42 Participants
are divided into 2 treatment groupsGroup A: Intraoral Photogrammetry (IPG)1 intervention
Group B: Mobile-Phone-Based Photogrammetry1 intervention
Trial outcomes
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.
Time frame
Immediately after scan acquisition and digital analysis (same study visit).Sponsors and contacts
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Menoufia University
Lead sponsor
Mansoura University
Collaborator
Source ClinicalTrials.gov