Radiographic and Clinical Evaluations of Mandibular Implant-Supported Overdentures Supported by Conventional and Zirconia CAD/CAM Bars: A Randomized Clinical Trial

This randomized clinical trial aimed to evaluate the radiographic and clinical evaluations of mandibular implant-supported overdentures supported d by two different bar materials。 Completely edentulous patients received two implants in the mandibular canine region and were rehabilitated with overdentures supported by a conventional cobalt-chromium bar and a zirconia CAD/CAM bar。 Radiographic marginal bone loss around implants, crestal bone height changes posteriorly and clinical peri-implant parameters were assessed at baseline,6 months, and 12 months to compare the performance of both bar materials。

NCT Number	NCT07429149
Lead Sponsor	Sara Mohamed Fakhry Meligy Mohamed Collaborators: Al-Azhar University
Conditions	Edentulous Mandible
Enrollment	12 participants
Start Date	2022-07-18
Primary Completion	2025-06-17 (estimated)
Study Completion	2025-06-19 (estimated)
Updated on ClinicalTrials.gov	2026-02-24