Single-surgery Bone Ring Technique for Sinus Lift and Dental Implant in the Back of the Upper Jaw

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This prospective, single-arm study evaluates the Bone Ring Technique, harvesting a bone ring from the chin to support a dental implant in the posterior maxilla with residual bone height ≤4 mm. Participants undergo a one-stage procedure combining external sinus floor elevation and implant placement, followed by xenograft filling and collagen membrane coverage. Primary outcome measures include implant stability, vertical bone gain, bone density around the implant, and implant survival over 6 months, using radiographic and clinical assessments. The goal is to reduce treatment time and number of surgeries compared with traditional two-stage approaches. Results will be reported in a peer-reviewed journal.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Need for dental implant in posterior maxilla (premolar/molar).
* Residual alveolar bone height ≤4 mm on preoperative CBCT.
* Age ≥18 years.
* Controlled systemic health.
* Able to comply with procedures and follow up.
* Good oral hygiene.
* Signed written informed consent.

Exclusion Criteria:

* Uncontrolled systemic disease.
* Head/neck radiotherapy.
* Bisphosphonate therapy \>3 years.
* Autoimmune disease affecting healing.
* Pregnancy/lactation.
* Active maxillary sinus pathology (sinusitis, cysts, polyps, tumours).
* Heavy smoking (\>10 cigarettes/day).
* Severe bruxism.

Where it's running

• Oral and Maxillofacial Surgery Hospital, Faculty of Dentistry, Damascus University, Mezzeh Highway, Damascus, Syria
  Damascus, Governorate, Syria Recruiting

Study contacts

• Study coordinator: Adel Alassaf, DDS
• Email: sx19adel@gmail.com
• Phone: +963 949038706

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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.