One-stage ridge splitting in the upper jaw using piezo surgery or a bone-disc technique
Official title: Evaluation of Endosseous Implants in One Stage Ridge Splitting Using the Conventional Technique Versus the Use of Piezo Surgery in the Maxilla
Run by Cairo University · NCT06891261 · Data updated 2026-11-12
We will try two ridge-splitting techniques—piezo surgery and bone discs—to widen narrow upper-jaw bone in adults needing a single-tooth implant.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 20 Years to 48 Years |
| Sex | All |
| Enrollment | 20 (estimated) |
| Sponsor | Cairo University Academic / other |
| Drugs / interventions | chemotherapy |
| Locations | 1 site (Cairo) |
| Status | Recruiting |
| Started | February 26, 2025 |
| Main results expected | July 30, 2025 |
| Study ends | October 31, 2025 |
| Registry record updated | July 16, 2025 |
| Trial ID | NCT06891261 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults with a single missing upper tooth, maxillary residual bone height of at least 8 mm and ridge width between 3–5 mm who can undergo CBCT imaging and attend follow-up visits.
✕Probably not a fit
Patients who smoke heavily, have uncontrolled metabolic or bone disease, recent head/neck radiotherapy or chemotherapy, pregnancy, active local bone pathology, or who are uncooperative are unlikely to benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Participants are randomized to one-stage ridge splitting in the maxilla performed either with piezoelectric bone inserts or with a bone-disc osteotomy, followed by bone chisels, drills, expanders and implant placement. All participants receive baseline CBCT, diagnostic wax-up and stent fabrication, and repeat CBCT at four months to document bone changes. Procedures are performed under local infiltration anesthesia with a full-thickness mucoperiosteal pyramidal flap and periosteal releasing incisions for tension-free closure. The protocol measures ridge width gain and implant site readiness after four months.
Why it matters
Potential benefit: If successful, the preferred technique could widen the alveolar ridge with less bone trauma and improve conditions for stable implant placement.
How similar studies have gone: Piezo-assisted ridge splitting has reported favorable outcomes in several case series and some clinical trials, while the bone-disc approach has less extensive published evidence.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patients with maxilla residual alveolar bone height not less than 8 mm. * Alveolar bone width from 5mm to 3mm. * Both genders. * At least single missing tooth. * Previous failed implants. * Tapered or cylinder cross sectioned alveolar bone defect pattern. Exclusion Criteria: * Heavy smokers more than 20 cigarettes per day. * Patients with bone disease that may affect normal healing, example; hyperparathyroidism. * Patients had radiotherapy and chemotherapy in head and neck. * Patients had neoplasms in sites to be grafted. * Patients with Metabolic diseases uncontrolled diabetic patients, Glycated hemoglobin (Hb A1c) more than 7 mg\\dl. * Pregnant females. * Patients with Para functional habits, apprehensive and non-cooperative. * Bone pathology related to the site to be grafted. * Psychological problems, stress situation (socially or professionally), emotional instability, and unrealistic patients' expectations. * Intraoral soft and hard tissue pathology. * Systemic condition that contraindicates implant placement. * Under the age of 18 years. * Hourglass defects or defects with bone concavities and or undercuts.
Where it's running
-
Faculty of Dentistry Cairo University
Cairo, Egypt Recruiting
Study contacts
- Study coordinator: Mohannad A. Ismail, MSc.
- Email: mohannadahmed@hotmail.com
- Phone: 01222968444
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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.