Edentulous JawNCT07821905
Accuracy of Complete-arch Implant Scans Obtained Using T-Marker
A study testing Smartphone and Tablet in people with Edentulous Jaw, run by Menoufia University at 1 site in Egypt.
Trial summary
This randomized crossover clinical study will evaluate and compare the accuracy and effective scanning time of complete-arch implant scans obtained using the (TruAbutment,Marker) T-Marker photogrammetry application operated on a smartphone and a tablet. Read more about this study
- Who is it for?
- Ages 40 to 60 years
- Conditions the study is for
- Edentulous Jaw
- What is being tested?
- Smartphone and Tablet
- Type of treatment
- Pill or oral medicine, Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 24 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Aug 2026to 1 Mar 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 40 to 60 years
- All sexes
- No healthy volunteers
- Adult
Who may be able to join
- Adults aged 40-60
- Completely edentulous maxillary arch.
- Four well-integrated dental implants connected to multiunit abutments.
- Implants positioned in the right and left canine and molar regions.
- Presence of a screw-retained interim implant-supported prosthesis or need for definitive implant-supported prosthetic rehabilitation.
- Willingness to provide written informed consent.
Who cannot join
- Fewer than four implants.
- Implants placed in the mandibular arch.
- Failed implants.
- Active peri-implant infection or suppuration
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Accuracy of Complete-arch Implant Scans Obtained Using (TruAbutment,Marker)T-Marker Obtained With a Mobile Phone and Tablet: A Randomized Crossover Clinical Study
This randomized crossover clinical study will evaluate and compare the accuracy and effective scanning time of complete-arch implant scans obtained using the (TruAbutment,Marker) T-Marker photogrammetry application operated on a smartphone and a tablet. Twenty-four patients with completely edentulous arches rehabilitated with four well-integrated implants connected to multiunit abutments will undergo both digital impression protocols in a randomized sequence. A verified conventional implant cast will serve as the reference standard. Linear and angular deviations between the implant positions obtained using each digital protocol and the reference model will be evaluated using three-dimensional analysis software. Effective scanning time required for implant coordinate acquisition and registration will also be recorded. The study will determine whether the use of T-Marker with a smartphone provides accuracy and scanning efficiency comparable to its use with a tablet.
Read the detailed description
Complete-arch implant scanning is challenging because of the large interimplant distances and the limited availability of stable anatomical landmarks, which may result in cumulative image-stitching errors. Photogrammetry-based workflows have been introduced to improve the accuracy of implant position recording. T-Marker is a photogrammetry application that uses external optical markers and image-acquisition protocols to determine implant positions.
This randomized crossover clinical study will compare two T-Marker acquisition devices: a smartphone and a tablet. Each participant will undergo both digital impression protocols, with the order of the protocols randomized to minimize potential order and operator-learning effects.
A verified conventional splinted implant impression will be used to fabricate a master cast, which will be digitized using a calibrated laboratory scanner to generate the reference dataset. T-Marker optical markers will then be attached to the multiunit abutments, and complete-arch implant position data will be acquired using either an iPhone 15 Pro Max or a tablet. The resulting digital datasets will be compared with the reference dataset using three-dimensional analysis software.
Linear and angular deviations will be evaluated to determine the trueness of the implant position measurements. Effective scanning time, defined as the time required to acquire and register all implant positions using the photogrammetric acquisition mode, will also be recorded. Surface and soft-tissue scanning, STL export, and data-merging procedures will not be included in the scanning-time measurement.
- Conditions
- Edentulous Jaw
- Being tested
- Smartphone, Tablet
- Medical subject headings
- Jaw, Edentulous
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SmartphoneDevice
Also called T-Marker Photogrammetry With Smartphone
Complete-arch implant positions are captured using T-Marker optical markers attached to the multiunit abutments and a smartphone-based photogrammetry workflow. An iPhone 15 Pro Max running the T-Marker application is used to acquire and register the implant positions.
TabletDevice
Complete-arch implant positions are captured using T-Marker optical markers attached to the multiunit abutments and a tablet running the T-Marker application. The system captures and registers the three-dimensional positions of the four implants.
| Study group | Role | What they receive |
|---|---|---|
| T-Marker With Smartphone | Experimental | Participants undergo complete-arch implant scanning using T-Marker optical markers attached to the multiunit abutments and a smartphone-based photogrammetry workflow. Receives: Device: Smartphone; Device: Tablet |
| T-Marker With Tablet | Experimental | Participants undergo complete-arch implant scanning using T-Marker optical markers attached to the multiunit abutments and a Tablet-based photogrammetry workflow. Receives: Device: Smartphone; Device: Tablet |
What is being measured
The primary outcome is the main question the study is designed to answer.
Angular deviation of complete-arch implant scans
Angular deviation of the implant positions obtained using T-Marker photogrammetry with a smartphone or tablet, compared with the reference implant positions obtained from the verified conventional splinted impression. Angular deviation will be measured in degrees using three-dimensional inspection software.
Measured: Immediately after each digital impression procedure
Secondary outcomes (1)
Linear deviation of complete-arch implant scans
Linear deviation of the implant positions obtained using T-Marker photogrammetry with a smartphone or tablet, compared with the reference implant positions obtained from the verified conventional splinted impression. Linear deviation will be measured in micrometers using three-dimensional inspection software.
Measured: Immediately after each digital impression procedure
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Sep 2026
- Study start1 Aug 2026
- Primary completion1 Feb 2027 (estimated)
- Study completion1 Mar 2027 (estimated)
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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Model description
- Each participant will undergo both digital impression protocols using the T-Marker application, with implant position acquisition performed using a smartphone and a tablet. The order of the two protocols will be randomized using a computer-generated randomization sequence.
- Masking
- None (open label)
- Enrolment
- 24 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Menoufia University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Mohammed El-Sawy, Menoufia University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07821905
- Sponsor's protocol ID
- ADMNF-0426
- Status last verified
- Sep 2026
- First submitted
- 8 Sep 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 reasonable 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 (TruAbutment,Marker)T-Marker Obtained With a Mobile Phone and Tablet: A Randomized Crossover Clinical Study
- ClinicalTrials.gov ID
- NCT07821905
- Acronym / sponsor ID
- ADMNF-0426
- Conditions
- Edentulous Jaw
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 24 participants (estimated)
- Lead sponsor
- Menoufia UniversityUniversity, hospital or other
- Study start
- 1 Aug 2026 (actual)
- Primary completion
- 1 Feb 2027 (estimated)
- Study completion
- 1 Mar 2027 (estimated)
- First posted
- 16 Sep 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 randomized crossover clinical study will evaluate and compare the accuracy and effective scanning time of complete-arch implant scans obtained using the (TruAbutment,Marker) T-Marker photogrammetry application operated on a smartphone and a tablet. Twenty-four patients with completely edentulous arches rehabilitated with four well-integrated implants connected to multiunit abutments will undergo both digital impression protocols in a randomized sequence. A verified conventional implant cast will serve as the reference standard. Linear and angular deviations between the implant positions obtained using each digital protocol and the reference model will be evaluated using three-dimensional analysis software. Effective scanning time required for implant coordinate acquisition and registration will also be recorded. The study will determine whether the use of T-Marker with a smartphone provides accuracy and scanning efficiency comparable to its use with a tablet.
Detailed description
Complete-arch implant scanning is challenging because of the large interimplant distances and the limited availability of stable anatomical landmarks, which may result in cumulative image-stitching errors. Photogrammetry-based workflows have been introduced to improve the accuracy of implant position recording. T-Marker is a photogrammetry application that uses external optical markers and image-acquisition protocols to determine implant positions.
This randomized crossover clinical study will compare two T-Marker acquisition devices: a smartphone and a tablet. Each participant will undergo both digital impression protocols, with the order of the protocols randomized to minimize potential order and operator-learning effects.
A verified conventional splinted implant impression will be used to fabricate a master cast, which will be digitized using a calibrated laboratory scanner to generate the reference dataset. T-Marker optical markers will then be attached to the multiunit abutments, and complete-arch implant position data will be acquired using either an iPhone 15 Pro Max or a tablet. The resulting digital datasets will be compared with the reference dataset using three-dimensional analysis software.
Linear and angular deviations will be evaluated to determine the trueness of the implant position measurements. Effective scanning time, defined as the time required to acquire and register all implant positions using the photogrammetric acquisition mode, will also be recorded. Surface and soft-tissue scanning, STL export, and data-merging procedures will not be included in the scanning-time measurement.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- Each participant will undergo both digital impression protocols using the T-Marker application, with implant position acquisition performed using a smartphone and a tablet. The order of the two protocols will be randomized using a computer-generated randomization sequence.
| Arm | Type | Receives |
|---|---|---|
| T-Marker With Smartphone | Experimental | Device: Smartphone, Device: TabletParticipants undergo complete-arch implant scanning using T-Marker optical markers attached to the multiunit abutments and a smartphone-based photogrammetry workflow. |
| T-Marker With Tablet | Experimental | Device: Smartphone, Device: TabletParticipants undergo complete-arch implant scanning using T-Marker optical markers attached to the multiunit abutments and a Tablet-based photogrammetry workflow. |
Who may qualify
- Ages
- 40 to 60 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (6 listed)
- Adults aged 40-60
- Completely edentulous maxillary arch.
- Four well-integrated dental implants connected to multiunit abutments.
- Implants positioned in the right and left canine and molar regions.
- Presence of a screw-retained interim implant-supported prosthesis or need for definitive implant-supported prosthetic rehabilitation.
Key exclusion criteria (4 listed)
- Fewer than four implants.
- Implants placed in the mandibular arch.
- Failed implants.
- Active peri-implant infection or suppuration
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 |
|---|---|---|
| SmartphoneAlso: T-Marker Photogrammetry With SmartphoneComplete-arch implant positions are captured using T-Marker optical markers attached to the multiunit abutments and a smartphone-based photogrammetry workflow. An iPhone 15 Pro Max running the T-Marker application is used to acquire and register the implant positions. | Device | T-Marker With Smartphone, T-Marker With Tablet |
| TabletComplete-arch implant positions are captured using T-Marker optical markers attached to the multiunit abutments and a tablet running the T-Marker application. The system captures and registers the three-dimensional positions of the four implants. | Device | T-Marker With Smartphone, T-Marker With Tablet |
Primary outcome
Angular deviation of complete-arch implant scans
Time frame: Immediately after each digital impression procedure
Angular deviation of the implant positions obtained using T-Marker photogrammetry with a smartphone or tablet, compared with the reference implant positions obtained from the verified conventional splinted impression. Angular deviation will be measured in degrees using three-dimensional inspection software.
1 secondary outcome
Linear deviation of complete-arch implant scans
Time frame: Immediately after each digital impression procedure
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 Sep 2026.
- Individual participant dataSharing planned: No. Up on reasonable 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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Smartphone and Tablet in people with 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 6 inclusion and 4 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: under way, not looking for participants, 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?
This study is still under way. Results are not available in the source record yet.
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?
Angular deviation of complete-arch implant scans (time frame: Immediately after each digital impression procedure). 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.