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Passive Fit of Implant-Supported Frameworks: Digital vs Conventional Impressions
Sponsor: Mansoura University
Summary
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.
Official title: Passive Fit Evaluation of Full-Arch Implant-supported Frameworks Using Digital and Conventional Impression Techniques: Crossover Study
Key Details
Gender
All
Age Range
35 Years - 70 Years
Study Type
INTERVENTIONAL
Enrollment
8
Start Date
2026-01-25
Completion Date
2027-01-25
Last Updated
2026-08-21
Healthy Volunteers
No
Conditions
Interventions
IO-Connect Digital Impression
Digital impression of the mandibular arch obtained using IO-Connect non-calibrated splinted scan bodies to fabricate the implant-supported framework for Group I.
Reverse Scan Body Digital Impression
Digital impression obtained using the Reverse Scan Body (RSB) technique, involving extraoral scanning of scan bodies and superimposition with intraoral tissue scans, to fabricate the implant-supported framework for Group II.
Conventional Splinted Impression
Conventional splinted open-tray impression using polyvinyl siloxane material and Type IV dental stone to fabricate the implant-supported framework for Group III.
Locations (1)
Faculty of Dentistry, Mansoura University
Al Mansurah, Dakahlia Governorate, Egypt