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Passive Fit of Implant-Supported Frameworks: Digital vs Conventional Impressions

RecruitingNAAges 35 Years - 70 YearsAllMansoura University
NCT07778199 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

This randomized crossover clinical trial compares the passivity of fit of complete-arch mandibular implant-supported frameworks fabricated using three impression techniques: a non-calibrated splinted digital scan body system (IO-Connect), a Reverse Scan Body (RSB) digital impression technique, and a conventional splinted open-tray impression technique. Eight completely edentulous patients each receiving four mandibular implants will be included. Passivity of fit will be evaluated clinically using the Sheffield one-screw test and radiographically using intraoral periapical radiographs obtained with the parallel technique.

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📋 Eligibility rules (as published)
Inclusion Criteria: * Completely edentulous patients requiring full-arch implant-supported fixed prosthesis * Age 35-70 years * Adequate mandibular bone to place at least four implants without major grafting * Ability to undergo digital scanning and radiographic evaluation * Signed informed consent Exclusion Criteria: * Systemic conditions affecting healing (uncontrolled diabetes, immunosuppression) * History of head/neck radiotherapy or bisphosphonate therapy * Active oral infection or severe bruxism * Strong gag reflex preventing accurate scanning * Poor compliance or unwillingness to attend follow-up visits
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What it tests

  • IO-Connect Digital Impression
  • Reverse Scan Body Digital Impression
  • Conventional Splinted Impression
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Where

1 site
Faculty of Dentistry, Mansoura University
Al Mansurah, Egypt
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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