Guided Equator overdentures for the lower jaw
Outcomes of Implant-Supported Equator Overdentures Following Fully Guided Static Implant Surgery: A Prospective Study
This project tests whether fully guided computer-assisted implant placement with Equator attachments gives reliable implant survival and less bone loss for adults with a completely edentulous lower jaw.
Quick facts
| Study type | Observational |
|---|---|
| Enrollment | 40 (estimated) |
| Ages | 40 Years to 70 Years |
| Sex | All |
| Sponsor | Menoufia University Academic / other |
| Locations | 1 site (Shibīn al Kawm) |
| Trial ID | NCT07196943 on ClinicalTrials.gov |
What this trial studies
This prospective 3-year study followed patients receiving mandibular implant-supported overdentures placed using a fully guided static computer-assisted implant surgery (CAIS) workflow with Equator® attachments. Four implants were planned in a quadrilateral configuration using CBCT and placed through a static surgical guide to optimize position and angulation for overdenture support. Primary outcomes were implant survival, peri-implant soft tissue health, and marginal bone changes measured over 3 years. The protocol emphasizes digital planning and guided drilling to improve surgical accuracy and prosthetic fit in challenging edentulous mandibles.
Who should consider this trial
Good fit: Ideal candidates are adults aged 40–75 with a completely edentulous mandible, sufficient bone to receive four implants, good general health, and willingness to attend all follow-up visits.
Not a fit: Patients with uncontrolled systemic disease, prior head-and-neck radiotherapy, insufficient bone volume, heavy smoking (>10 cigarettes/day), poor oral hygiene, or inability to comply with visits may not benefit from this approach.
Why it matters
Potential benefit: If successful, this approach could give patients more predictable implant outcomes, better denture stability, and less bone loss over time.
How similar studies have performed: CAIS has improved implant placement accuracy in fixed prosthodontics and smaller clinical reports suggest similar benefits for overdentures, but long-term evidence for removable prosthodontics has been limited until now.
Eligibility criteria
Show full inclusion / exclusion criteria
* Inclusion Criteria: * Completely edentulous mandible requiring implant-supported overdenture rehabilitation * Adequate bone volume to accommodate four implants in a quadrilateral configuration, confirmed by cone-beam computed tomography (CBCT) * Age between 40 and 75 years * Good general health with no systemic contraindications to implant surgery * Willingness and ability to provide informed consent * Commitment to attend all scheduled follow-up visits over the 3-year study period * Exclusion Criteria: * Uncontrolled systemic diseases (e.g., diabetes mellitus, osteoporosis) * History of radiotherapy in the head and neck region * Untreated oral infections or severe periodontal disease * Poor oral hygiene or inability to comply with maintenance protocols * Heavy smoking (\>10 cigarettes/day) or alcohol abuse * Known allergy or intolerance to materials or medications used in the study
Where this trial is running
Shibīn al Kawm
- Faculty of Dentistry — Shibīn al Kawm, Egypt (Recruiting)
Study contacts
- Principal investigator: Mohammed El-Sawy, PhD — Menoufia University
- Study coordinator: Mohammed A. El-Sawy, PhD
- Email: Dr_sawy@windowslive.com
- Phone: 00201061314522
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.