Skip to main content
OpenTrials
Completed

NCT Number: NCT07211022

Precision of Digital Impressions in Complete-Arch Implant Rehabilitation: Evaluation of Two Digital Techniques

This clinical trial evaluates the accuracy of two digital impression techniques intraoral photogrammetry and intraoral scanning in patients rehabilitated with full-arch implant-supported prostheses (All-on-4 and All-on-6 concepts).

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Complete Edentulism

Age range

18 year–80 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University Dental Clinic of Aldent University

Tirana, Albania, 1017

About this study

The study aims to evaluate and compare two digital impression techniques, intraoral scanning and intraoral photogrammetry methods in terms of precision, accuracy (using conventional impression technique as reference), and passive fit of complete-arch implant supported restorations. The trial is an in vivo comparative study with direct 3D deviation analysis and evaluation.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adults ≥18 years
  • Edentulous maxilla or mandible
  • All-on-4 or All-on-6 implant supported restoration
  • Ability to provide informed consent

Exclusion criteria

  • Severe systemic diseases (ASA III+)
  • Bisphosphonate therapy
  • Heavy bruxism
  • Inability to attend follow-up

Treatment and study plan

Digital impression using intraoral scanner

Procedure

Digital impression of complete- arch edentulous patients using intraoral scanner

Digital impression using intraoral photogrammetry

Procedure

Digital impression of complete-arch edentulous patients using intraoral photogrammetry

conventional impression

Procedure

Conventional impression of complete-arch edentulous patients

Primary outcomes

  1. Digital impressions of all the enrolled patients

    Time frame: After 3 months from implant placement for all the enrolled patients

    STL files of digital impressions, intraoral scanning and photogrammetry , of all the enrolled patients.

Secondary outcomes

  1. Virtual analyses of implant positions

    Time frame: Within 3 months from digital impression

    Three dimensional positional deviation for each abutment analog , as well as distance and angular deviations between all pairs of abutment analogs captured by intraoral scanning vs. intraoral photogrammetry digital impression - measured using metrology software (Geomagic Control X)

Sponsors and collaborators

Lead sponsor

Aldent University

Other

Registry information

Official study title

Clinical Evaluation of the Complete Arch Digital Impressions Accuracy Using Photogrammetry and Intraoral Scanning

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Oct 7, 2025
Registry last updated
Apr 6, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.