Accuracy of Complete-arch Implant Scans Obtained Using T-Marker

NCT07821905 | Active Not Recruiting

• 1 other identifier: ADMNF-0426
• Study Type: interventional
• Target: 24
• Locations: 1 country
• Sites: 1

Brief 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. 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.

Conditions

Edentulous Jaw

Outcome Measures

Primary Outcomes (1)

• 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.

  Immediately after each digital impression procedure

Secondary Outcomes (1)

• Linear deviation of complete-arch implant scans

  Immediately after each digital impression procedure

Study Arms (2)

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.

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.

Device: Smartphone; Device: Tablet

Interventions

Smartphone DEVICE

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.

Also known as: T-Marker Photogrammetry With Smartphone

T-Marker With Smartphone; T-Marker With Tablet

Tablet DEVICE

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.

T-Marker With Smartphone; T-Marker With Tablet

Eligibility Criteria

• Age: 40 Years - 60 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• 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.

You may not qualify if:

• Fewer than four implants.
• Implants placed in the mandibular arch.
• Failed implants.
• Active peri-implant infection or suppuration

Sponsors & Collaborators

• Menoufia University: lead

Study Sites (1)

Mohammed Elsawy

Shibīn al Kawm, Menoufia, 2266166, Egypt

Location

MeSH Terms

Conditions

Jaw, Edentulous

Interventions

Vaginal Creams, Foams, and Jellies

Condition Hierarchy (Ancestors)

Jaw Diseases; Musculoskeletal Diseases; Stomatognathic Diseases; Mouth, Edentulous; Mouth Diseases; Tooth Diseases

Intervention Hierarchy (Ancestors)

Dosage Forms; Pharmaceutical Preparations; Feminine Hygiene Products; Equipment and Supplies

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Masking Details: No participants, care providers, investigators, or outcome assessors will be masked to the digital impression device used.
• Purpose: OTHER
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Senior Lecturer of Prosthodontics

Model Details: 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.

Study Record Dates

• First Submitted: September 8, 2026
• First Posted: September 16, 2026
• Study Start: August 1, 2026
• Primary Completion (Estimated): February 1, 2027
• Study Completion (Estimated): March 1, 2027
• Last Updated: September 16, 2026

Record last verified: 2026-09

Data Sharing

• IPD Sharing: Will not share

Locations

EG (1)