Truness of Full Arch Impressions in All on x Cases

NCT07550725 | Not Yet Recruiting

• 1 other identifier: RECO6u/2025
• Study Type: interventional
• Target: 11
• Locations: 1 country
• Sites: 1

Brief Summary

This study aims to compare the trueness and precision of three impression methodologies photogrammetry, digital intraoral scanning with splinted scan bodies, and conventional open tray impressions in the context of the All-on-X treatment concept. This will provide valuable evidence for clinicians considering digital workflows for implant-supported prostheses. Does the use of photogrammetry and digital impression techniques with splinted scan bodies result in improved accuracy in implant position transfer in the All-on-X concept compared to conventional open tray impressions?

Conditions

Truness of Impression Techniques in All on x Cases; Trueness of Full Arch Implant Prosthesis Impression

Outcome Measures

Primary Outcomes (1)

• Accuracy measured using 3D inspection software (Geomagic Control X).

  Immediately after measurements taking

Secondary Outcomes (1)

• Oral health-related quality of life (OHRQoL), assessed using standardized questionnaires.

  immediately after measurements taking

Study Arms (3)

photogrammetry based full-arch impression

EXPERIMENTAL

Device: photogrammetry based full arch impression

Digital impression using splinted scan bodies

EXPERIMENTAL

Device: Digital Impression Using Splinted Scan Bodies

conventional open tray implant impression

ACTIVE COMPARATOR

Procedure: Conventional Open-Tray Implant Impression

Interventions

photogrammetry based full arch impression DEVICE

use of photogrammetry system to capture the positions of All on X implants digitally without physical impression material. This technique aims to achieve precise measurements and increase patient satisfaction

photogrammetry based full-arch impression

Digital Impression Using Splinted Scan Bodies DEVICE

Digital full-arch impression using splinted scan bodies connected with resin to enhance stability. An intraoral scanner captures the splinted assembly for framework fabrication. Accuracy and patient satisfaction will be evaluated.

Digital impression using splinted scan bodies

Conventional Open-Tray Implant Impression PROCEDURE

Traditional full-arch open-tray impression using polyether or VPS material with splinted impression copings. This serves as the standard comparator for evaluating accuracy and patient satisfaction.

conventional open tray implant impression

Eligibility Criteria

• Age: 55 Years - 65 Years
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• 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.

You may not qualify if:

• 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)

Sponsors & Collaborators

• October 6 University: lead

Study Sites (1)

October 6 University

Giza, Egypt

Location

Related Publications (1)

• Drancourt, N., Auduc, C., Mouget, A., Mouminoux, J., Auroy, P., Veyrune, J. L., El Osta, N., & Nicolas, E. (2023). Accuracy of Conventional and Digital Impressions for Full-Arch Implant-Supported Prostheses: An In Vitro Study. Journal of personalized medicine, 13(5), 832.

  BACKGROUND

Central Study Contacts

hadeer Ali, teaching assistant

CONTACT

01143252442; hadeeralisoliman5@gmail.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: DIAGNOSTIC
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: teaching assistant

Study Record Dates

• First Submitted: February 14, 2026
• First Posted: April 24, 2026
• Study Start: May 1, 2026
• Primary Completion (Estimated): September 1, 2026
• Study Completion (Estimated): October 1, 2026
• Last Updated: May 7, 2026

Record last verified: 2026-04

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP, ICF, CSR, ANALYTIC CODE

Locations

EG (1)