Prospective Outcomes of Guided Equator Overdentures
Outcomes of Implant-Supported Equator Overdentures Following Fully Guided Static Implant Surgery: A Prospective Study
Menoufia University
40 participants
Sep 1, 2025
OBSERVATIONAL
Conditions
Summary
This prospective clinical study evaluated the 3-year performance of mandibular implant-supported overdentures (IODs) placed using a fully guided static computer-assisted implant surgery (CAIS) protocol. Primary outcomes included implant survival, peri-implant soft tissue health, and marginal bone loss. Findings provide evidence for the predictability of digital surgical workflows in removable prosthodontics.
Eligibility
Inclusion Criteria6
- 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 Criteria6
- 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
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Interventions
Mandibular edentulism will be rehabilitated with implant-supported overdentures using a fully guided static computer-assisted implant surgery (CAIS) protocol. Each patient will receive four implants placed in a quadrilateral configuration (lateral incisor and first premolar regions) under a stereolithographically manufactured surgical guide. Following 3-4 months of osseointegration, definitive mandibular overdentures will be fabricated and retained exclusively with Equator® attachment systems (Rhein 83, Bologna, Italy). Patients will be followed for 3 years to assess implant survival, peri-implant soft tissue health, and marginal bone changes.
Locations(1)
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NCT07196943