One-stage ridge splitting in the back lower jaw using two techniques

Evaluation of Endosseous Implants in One Stage Ridge Splitting Using the Conventional Technique Versus the Use of Piezo Surgery in the Posterior Mandible Region (Randomized Clinical Trial)

This compares two surgical methods—piezo surgery versus conventional bone-disc cuts—to widen the narrow back lower jaw so dental implants can be placed in adults with limited ridge width.

Quick facts

• Phase: Not applicable
• Study type: Interventional
• Enrollment: 20 (estimated)
• Ages: 20 Years to 48 Years
• Sex: All
• Sponsor: Cairo University (Academic / other)
• Drugs / interventions: chemotherapy
• Locations: 1 site (Cairo)
• Trial ID: NCT06891313 on ClinicalTrials.gov

What this trial studies

This randomized interventional study assigns patients with narrow posterior mandibular ridges to ridge splitting with either piezoelectric surgery or conventional bone-disc osteotomies, with simultaneous implant placement. Patients undergo preoperative CBCT and diagnostic planning, local infiltration anesthesia, and a full-thickness mucoperiosteal flap with periosteal releasing incisions to permit tension-free closure. The study group uses piezo surgery inserts for osteotomies while the control group uses bone disc instruments, and all patients receive a CBCT at four months postoperatively to document bone changes. Outcomes include change in ridge width, healing and complications, and suitability of the sites for implants.

Who should consider this trial

Good fit: Adults with a posterior mandibular ridge 3–5 mm wide and at least 8 mm high, missing one or more posterior teeth and otherwise healthy enough for oral surgery, are the intended participants.

Not a fit: People who are heavy smokers (>20 cigarettes/day), have uncontrolled metabolic or bone diseases, prior head/neck radiotherapy, pregnancy, active oral pathology, or who are non-cooperative or have parafunctional habits are unlikely to benefit or be eligible.

Why it matters

Potential benefit: If successful, the piezo approach could allow safer, more precise ridge widening with less bone trauma and improved conditions for implant placement.

How similar studies have performed: Piezoelectric ridge splitting and conventional osteotomy techniques have been reported in prior clinical series with encouraging results, but direct randomized comparisons remain limited.

Eligibility criteria

Inclusion Criteria:

* Patients with mandibular 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 this trial is running

Cairo

• Faculty of Dentistry Cairo University — Cairo, Egypt (Recruiting)

Study contacts

• Study coordinator: Mohannad A. Ismail, MSc.

Conditions Ridge Augmentation; Bone Augmentation; ridge augmentation; One stage ridge splitting in posterior mandible.; Piezo Surgery