Clinical trial Recruiting at 1 site Interventional Ages 20 to 48

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 typeInterventional
Ages20 Years to 48 Years
SexAll
Enrollment20 (estimated)
SponsorCairo University
Academic / other
Drugs / interventionschemotherapy
Locations1 site (Cairo)
StatusRecruiting
StartedFebruary 26, 2025
Main results expectedJuly 30, 2025
Study endsOctober 31, 2025
Registry record updatedJuly 16, 2025
Trial IDNCT06891261 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

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.