Regular vs narrow-diameter dental implants to support a lower full denture
Official title: Clinical and Radiographic Evaluation of Using Regular Versus Narrow Diameter Dental Implantto Support Mandibular Complete Over Denture
Run by Tanta University · NCT07800949 · Data updated 2026-11-12
This study tests whether using regular or narrow-diameter implants can better stabilize and support a lower complete denture in people who have lost teeth and have worn dentures for years.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 55 Years to 65 Years |
| Sex | All |
| Enrollment | 12 (estimated) |
| Sponsor | Tanta University Academic / other |
| Locations | 1 site (Cairo) |
| Status | Recruiting |
| Started | August 25, 2026 |
| Main results expected | August 25, 2027 |
| Study ends | October 30, 2027 |
| Registry record updated | October 2, 2026 |
| Trial ID | NCT07800949 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Completely edentulous adults aged 55–65 years with good health for minor surgery and adequate inter-arch space, and no active oral pathology.
✕Probably not a fit
Patients with uncontrolled systemic conditions, active oral infections, or unsuitable ridge/mucosa may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This Phase 2 interventional trial compares regular-width implants to narrow-width implants for supporting a mandibular complete denture in completely edentulous adults. Eligible participants are 55 to 65 years old with Angle Class I jaw relationships and no significant systemic bone or healing issues. The study focuses on implant placement to improve denture retention, stability, and function after long-term denture use and ridge atrophy. Outcomes will relate to implant performance and denture support, with strict exclusion of patients with oral infections or significant medical risks. Lead sponsor is Mostafa Bahaa, with collaboration from the Faculty of Dental Medicine for Girls at Al-Azhar University in Cairo.
Why it matters
Potential benefit: If successful, participants may experience improved denture stability, retention, and comfort with the lower denture.
How similar studies have gone: Previous implant-supported denture studies have shown improvements in retention with implants, but direct comparison of regular versus narrow-diameter implants for this indication is less established.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: . All patients should be free from any systemic diseases that might affect the bone quality or post-operative healing. * Completely edentulous patients with their age range from 55 to 65 years * All patients have Angle's Class I maxillomandibular relationship * Normal facial symmetry with no signs and symptoms of temporomandibular disorders. * Cooperative patients * Adequate inter-arch space. * All patients have recent and old extractions ,a period of at least 6 months from the date of last extraction. * All patients have lower arch with irregular buccolingual thickness . * Edentulous ridge covered by healthy firm mucoperiosteum, without abnormal morphology. * Normal tongue size. * All the selected patients should be free from any oral pathological lesions such as cysts, remaining root, or residual infection. Exclusion Criteria: General health conditions preclude a minor surgical intervention, risk patients are excluded. * Local anesthesia with a vasoconstrictor is contraindicated * Immunosuppressive therapy, prolonged intake of antibiotics or corticosteroids, or brittle metabolic disease history.
Where it's running
-
Al-Azhar University
Cairo, Egypt Recruiting
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.