Trueness of Full Arch Impressions in All-on-X Cases
Official title: Trueness of Full-Arch Impressions Using Photogrammetry, Splinted Digital Scan Bodies Versus Conventional Open-Tray Techniques in the All-on-x Prosthesis
Run by October 6 University · NCT07550725 · Data updated 2026-11-12
This study tests whether photogrammetry, digital intraoral scanning with splinted scan bodies, or traditional open-tray impressions produce more accurate full-arch implant transfers for All-on-X prostheses.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 55 Years to 65 Years |
| Sex | Men only |
| Enrollment | 11 (estimated) |
| Sponsor | October 6 University Academic / other |
| Drugs / interventions | radiation |
| Locations | 1 site (Giza) |
| Status | Recruiting |
| Started | May 1, 2026 |
| Main results expected | October 1, 2026 |
| Study ends | November 1, 2026 |
| Registry record updated | September 10, 2026 |
| Trial ID | NCT07550725 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults 45-65 with fully or partially edentulous maxilla needing a fixed All-on-X restoration and meeting health and radiographic criteria.
✕Probably not a fit
Patients with uncontrolled systemic disease, head and neck radiation history, active periodontal disease, or significant anatomical limitations may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This interventional study compares three impression methods for All-on-X implant-supported prostheses: photogrammetry, digital intraoral scanning with splinted scan bodies, and conventional open-tray impressions. It aims to determine which method provides the most trueness and precision in translating implant positions to the prosthesis. The trial will enroll adults aged 45-65 who require full-arch rehabilitation of the maxilla and meet health and anatomical criteria. Outcomes focus on accuracy of implant position transfer, with implications for choosing digital versus conventional workflows in implant dentistry. Conducted at October 6 University in Giza, the study evaluates whether modern digital techniques improve treatment predictability for fixed, implant-supported maxillary prostheses.
Why it matters
Potential benefit: If successful, the findings could improve accuracy and predictability of All-on-X treatments, potentially reducing chair time and need for adjustments.
How similar studies have gone: Previous work in digital impressions and splinted scan bodies has shown promise for improving transfer accuracy, but results can vary by technique and clinical setup.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Adults aged 45-65 years. * Fully edentulous or partially edentulous maxilla requiring full-arch rehabilitation. * Sufficient maxillary bone volume to support at least four implants according to the All-on-X protocol. * Systemically healthy patients with no contraindications to dental implant surgery (ASA I-II classification). * Demonstrated ability to maintain adequate oral hygiene * Willingness to participate in the study and comply with follow-up visits and required maintenance protocols. * Patients seeking a fixed, implant-supported prosthesis for the maxilla due to missing teeth and inability to use removable prostheses effectively. * Acceptable radiographic findings with no signs of pathology, infection, or significant anatomical limitations. Exclusion Criteria: * Uncontrolled systemic diseases (e.g., uncontrolled diabetes, osteoporosis, immunosuppressive disorders) * History of radiation therapy to the head and neck region * Active periodontal disease or untreated caries * Maxillary cysts, tumors, or pathologies * Poor oral hygiene or inability to maintain postoperative care * Insufficient bone volume for All-on-X without extensive grafting * Maxillary sinus pathology or oroantral fistula * Psychiatric illness or cognitive impairment affecting compliance * Bruxism or parafunctional habits * Pregnant or lactating women * History of implant failure or titanium allergy * Use of bisphosphonates or antiresorptive medications * Heavy smoking (\>10 cigarettes/day) * Inability or unwillingness to attend follow-up visits * Diagnosed or symptomatic temporomandibular joint disorders (pain, clicking, locking, limited opening)
Where it's running
-
October 6 University
Giza, Egypt Recruiting
Study contacts
- Study coordinator: hadeer Ali, teaching assistant
- Email: hadeeralisoliman5@gmail.com
- Phone: 01143252442
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.