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

NCT07429149 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 12

Last updated 2026-02-24

No results posted yet for this study

Summary

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。

Conditions

  • Edentulous Mandible

Interventions

DEVICE

Cobalt-Chromium Bar Attachment

A conventional cast cobalt-chromium bar used to retain a mandibular implant-supported overdenture

DEVICE

Zirconia CAD/CAM Bar Attachment

A zirconia CAD/CAM-fabricated bar used to retain a mandibular implant-supported overdenture

Sponsors & Collaborators

  • Al-Azhar University

    collaborator OTHER

  • Sara Mohamed Fakhry Meligy Mohamed

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
50 Years
Max Age
60 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2022-07-18
Primary Completion
2025-06-17
Completion
2025-06-19

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07429149 on ClinicalTrials.gov