CompletedNot Applicable

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

Egypt12 participantsStarted 2022-07-18

Plain-language 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。

Who can participate

Age range

50 Years – 60 Years

Sex

MALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * • Patients age range was between 50-60 years old. * Only male patients were selected to participate in this study. * All patients were apparently free from any systemic or debilitating diseases that might affect bone metabolism or delay post-operative healing. * Patients were free from any temporo-mandibular joint disorders. * Patients were free from any neuromuscular or bony disorders, and medically free from any neurologic disorder affecting the neuro-muscular system. * Patients' residual alveolar ridges were covered with firm, healthy mucosa, free from any signs of inflammation, ulceration, or flabby tissue. * Mandibular edentulous alveolar ridge areas had sufficient width and height of alveolar bone. * Patients exhibited Angle Class I maxillo-mandibular relationship and sufficient inter-arch space. * Patients had good oral hygiene. * A period of at least six months up to one year had elapsed from the last extraction. Exclusion Criteria: * • Patients with systemic diseases that might affect bone quality, contribute to bone resorption, increase surgical risk, or delay/complicate post-operative healing. * Patients with parafunctional habits such as bruxism, clenching, or grinding. * Patients with residual ridge covered by inflamed, ulcerated, or flabby mucosa. * Patients with inadequate inter-arch space. * Patients with abnormal tongue behavior and/or size. * Patients with xerostomia or excessive salivation. * Heavy sm…

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Marginal bone loss around Implants

Timeframe: Baseline,6 months, and 12 months

Posterior crestal bone height changes of the mandibular ridge

Timeframe: Baseline,6months,12months

Trial details

NCT IDNCT07429149

SponsorSara Mohamed Fakhry Meligy Mohamed

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2025-06-17

View on ClinicalTrials.gov More Edentulous Mandible trials