Accuracy of complete-arch implant scans with two non-calibrated splinting systems

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

In this randomized crossover trial, completely edentulous participants with four well-integrated implants will be scanned using two non-calibrated splinting systems. Each participant will receive scans with both protocols in random order, and results will be compared to a verified reference impression digitized into a reference model. Primary outcomes are linear and angular accuracy of the digital scans relative to the reference, along with the chairside time required for each scanning method. A conventional, validated reference impression will establish the baseline for accuracy. The study aims to determine if one system provides more accurate digital impressions or saves time during the procedure.

Why it matters

Who can join: the full rules

Inclusion Criteria

* Adults aged 18 years or older.
* Completely edentulous maxilla or mandible.
* Four clinically stable and osseointegrated implants restored with multiunit abutments.
* Patients with a screw-retained interim prosthesis or patients scheduled to receive a definitive complete-arch implant-supported prosthesis.
* Ability to undergo intraoral scanning procedures and provide written informed consent.

Exclusion Criteria

* Fewer or more than four implants in the evaluated arch.
* Failed or clinically unstable implants.
* Active peri-implant infection or suppuration.
* Limited mouth opening that prevents completion of the intraoral scanning procedures.
* Inability or unwillingness to provide written informed consent.

Where it's running

• Faculty of Dentistry, Menoufia University
  Shibīn al Kawm, Menoufia, Egypt Recruiting

Study contacts

• Principal investigator: Mohammed El-Sawy, PhD — Menoufia, Faculty of Dentistry
• Study coordinator: Mohammed A. El-Sawy, PhD
• Email: Dr_Sawy@windowslive.com
• Phone: 00201061314522

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Other studies for the same condition or treatment. Recruiting studies are listed first.

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.