Health TrialsbyHealthPanel

Using Chin Bone Rings for Sinus Lifting and Dental Implants in One Surgery

ConditionsMaxillary DeficiencyBone Resorption
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18-70
SponsorDamascus University

About this trial

This study evaluates the Bone Ring Technique, a single stage procedure that combines external sinus floor elevation and dental implant placement using an autogenous bone ring harvested from the chin. Ten patients with residual alveolar bone height ≤4 mm in the posterior maxilla will be enrolled. Implant stability (ISQ), vertical bone gain, peri implant bone density, and implant survival will be assessed over 6 months. The aim is to reduce treatment time and surgical interventions compared to traditional two stage approaches.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Need for dental implant in posterior maxilla (premolar/molar).

Residual alveolar bone height ≤4 mm on preoperative CBCT.

Age ≥18 years.

Controlled systemic health.

Disqualifiers

Uncontrolled systemic disease.

Head/neck radiotherapy.

Bisphosphonate therapy >3 years.

Autoimmune disease affecting healing.

Trial design

Design model

Single group

Treatments tested in this trial

  • Bone Ring Technique (BRT)

    Procedure/Surgery

    The Bone Ring Technique (BRT) is a one-stage surgical procedure that combines external maxillary sinus floor elevation with simultaneous dental implant placement. An autogenous bone ring is harvested from the mandibular symphysis using trephine burs. The sinus membrane is elevated via a lateral window approach created with a straight handpiece and diamond round bur. The bone ring is then placed into the sinus cavity, and a dental implant is inserted through the ring into the residual alveolar bone. The surgical site is augmented with xenograft particles and covered with a collagen membrane.

Treatment groups

10 Participants
are divided into 1 treatment group
Group A: Bone Ring Technique (BRT)Experimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Implant Stability Quotient (ISQ).

Measured by resonance frequency analysis with MEGA ISQ II (MegaGen, Korea), Four readings per implant (mesial, distal, buccal, lingual); mean value reported

Time frame
Immediately after implant placement (baseline) and 6 months post_surgery (before prosthetic loading).

Secondary outcomes

1

Vertical Bone Gain (mm)

Distance from implant shoulder to highest point of elevated sinus floor; measured on coronal sections using Ez3D plus software

Time frame
at preoperative, 1 week post_surgery , 6 months post_surgery
2

Peri implant Bone Density (gray values)

regions of interest: coronal, middle, apical thirds

Time frame
at preoperative, 1 week post_surgery , 6 months post_surgery
3

Implant Survival & Success

Survival = implant in situ. Success = absence of mobility, persistent pain, peri implant radiolucency, suppuration; and crestal bone loss \<1.5 mm on CBCT.

Time frame
6 months post_surgery

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

Damascus University

Lead sponsor

Source ClinicalTrials.gov
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