Edentulous JawNCT07643441
Accuracy of Complete-Arch Implant Photogrammetry
An observational study of Edentulous Jaw, run by Menoufia University at 1 site in Egypt.
Trial 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. Read more about this study
- Who is it for?
- Ages 18 to 50 years
- Conditions the study is for
- Edentulous Jaw
- What is being tested?
- Intraoral Photogrammetry (IPG) and Mobile-Phone-Based Photogrammetry
- Type of treatment
- Medical device
- How many people
- 24 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Jan 2026to 1 Aug 2026
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 50 years
- All sexes
- Adult
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.
Who may be able to join
- 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.
Who cannot join
- 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.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Accuracy of Complete-arch Implant Scans Obtained Using Intraoral Photogrammetry and a Mobile-phone Based Photogrammetry.
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.
Read the detailed description
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.
- Conditions
- Edentulous Jaw
- Being tested
- Intraoral Photogrammetry (IPG), Mobile-Phone-Based Photogrammetry
- Medical subject headings
- Jaw, Edentulous
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Intraoral Photogrammetry (IPG)Device
Also called IPF Elite; Shining 3D; Intraoral Photogrammetry System
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.
Mobile-Phone-Based PhotogrammetryDevice
Also called T-Marker; Extraoral Photogrammetry; Mobile-Phone-Based 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.
| Study group | Role | What they receive |
|---|---|---|
| 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. Receives: 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. Receives: Device: Mobile-Phone-Based Photogrammetry |
What is being measured
The primary outcome is the main question the study is designed to answer.
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.
Measured: Immediately after scan acquisition and digital analysis (same study visit).
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Jun 2026
- Study start1 Jan 2026
- Primary completion1 Jun 2026
- Study completion1 Aug 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Edentulous JawStudies of the same condition, open and under way.
- More trials run by Menoufia UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 24 participants (actual)
Sponsor and investigators
- Lead sponsor
- Menoufia University
- Sponsor type
- University, hospital or other
- Collaborators
- Mansoura University
- Responsible party
- Principal investigator, Mohammed El-Sawy, Menoufia University
- Investigators
- Mohammed A. El-Sawy, PhD, Principal investigator, Menoufia University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07643441
- Sponsor's protocol ID
- R.26.125
- Status last verified
- Sep 2026
- First submitted
- 7 Jun 2026
- Last updated
- 16 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Up on resonable request from the corresponding author
Study at a glance
From the registry record, last updated by the sponsor on 16 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Accuracy of Complete-arch Implant Scans Obtained Using Intraoral Photogrammetry and a Mobile-phone Based Photogrammetry.
- ClinicalTrials.gov ID
- NCT07643441
- Acronym / sponsor ID
- R.26.125
- Conditions
- Edentulous Jaw
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 24 participants (actual)
- Lead sponsor
- Menoufia UniversityUniversity, hospital or other
- Collaborators
- Mansoura University
- Study start
- 1 Jan 2026 (actual)
- Primary completion
- 1 Jun 2026 (actual)
- Study completion
- 1 Aug 2026 (actual)
- First posted
- 11 Jun 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Detailed description
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.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Intraoral Photogrammetry (IPG) | – | Device: 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. |
| Mobile-Phone-Based Photogrammetry | – | Device: Mobile-Phone-Based PhotogrammetryParticipants 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. |
Who may qualify
- Ages
- 18 to 50 years
- Sex
- All
- Age groups
- Adult
- 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.
Key inclusion criteria (5 listed)
- 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.
Key exclusion criteria (7 listed)
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Intraoral Photogrammetry (IPG)Also: IPF Elite; Shining 3D; Intraoral Photogrammetry SystemA 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. | Device | Intraoral Photogrammetry (IPG) |
| Mobile-Phone-Based PhotogrammetryAlso: T-Marker; Extraoral Photogrammetry; Mobile-Phone-Based Photogrammetry SystemA 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. | Device | Mobile-Phone-Based Photogrammetry |
Primary outcome
Linear Discrepancy of Complete-Arch Implant Scans
Time frame: Immediately after scan acquisition and digital analysis (same study visit).
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.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 Sep 2026.
- Individual participant dataSharing planned: No. Up on resonable request from the corresponding author
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Mohammed A. El-Sawy, PhD principal investigator
Menoufia University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Edentulous Jaw, run by Menoufia University at 1 site in Egypt.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 16 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Linear Discrepancy of Complete-Arch Implant Scans (time frame: Immediately after scan acquisition and digital analysis (same study visit).). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Sep 2026.