How scanning methods affect fit of mandibular fixed detachable prostheses

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 crossover clinical trial, researchers compare three digital scanning techniques to fabricate mandibular implant-supported fixed detachable prostheses in completely edentulous adults. Participants will receive digital impressions using splinted scan bodies, horizontal non-calibrated scan bodies, and auxiliary geometric devices, with results analyzed for accuracy and passive fit. Outcomes include linear and angular deviations between implant positions and a three-dimensional surface deviation analysis, guiding which technique best preserves fit. Verification jigs will be produced via CAD/CAM and clinically evaluated. The study is conducted at Tanta University and aims to quantify how scanning method influences prosthesis accuracy.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Completely edentulous patients with age between 40-60 years.
* Adequate bone height to fulfill the criteria for implant placement.
* Patients should have a class I Angle's classification.

Exclusion Criteria:

.Insufficient vertical inter-arch space to accommodate the restorative components.

.Presence of psychiatric or neurological conditions. .Any systemic diseases that may affect implant bone osteointegration.

Where it's running

• Faculty of Dentistry, Tanta University
  Tanta, Gharbia Governorate, Egypt Recruiting

Study contacts

• Principal investigator: Mostafa Hamed Mostafa Abd El-Hameed Abd El-Hameed, BDS, MSc — Faculty of Dentistry, Tanta University, Egypt
• Study coordinator: Mostafa Hamed Mostafa Abd El-Hameed Abd El-Hameed, BDS, MSc
• Email: mostafa_hamed@dent.tanta.edu.eg
• Phone: +201090461713

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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.