- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT07619846
Using Chin Bone Rings for Sinus Lifting and Dental Implants in One Surgery (BRT-SINUS)
Evaluation of Effectiveness of Bone Ring Technique in One Stage Surgery of External Maxillary Sinus Lifting With Implantation: A Prospective Case Series
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
The Bone Ring Technique (BRT) was introduced by Giesenhagen (2004) to address severe posterior maxillary atrophy. In this prospective single arm case series, after obtaining ethics approval (DN 28102025 542, Damascus University), ten patients with residual bone height ≤4 mm will undergo: harvesting of an 8 mm cylindrical autogenous bone ring from the mandibular symphysis using trephine burs; creation of a lateral window in the maxillary sinus using a straight handpiece with a diamond round bur; meticulous elevation of the Schneiderian membrane; placement of the bone ring; simultaneous insertion of a dental implant (ICX) through the ring into the native ridge; filling of the defect with xenograft (bovine) particles; coverage with a collagen membrane; and suturing Primary stability will be measured immediately after implantation using resonance frequency analysis (Mega ISQ II).
CBCT scans (PaX i3D, VATECH) will be performed preoperatively, at 1 week, and at 6 months to quantify vertical bone gain (distance from implant shoulder to sinus floor) and peri implant bone density (Hounsfield like units).
Clinical follow up includes suture removal at 7 10 days and assessment of implant survival/success at 6 months (absence of mobility, pain, radiolucency, suppuration, crestal bone loss <1.5 mm).
Results will be submitted for publication in a peer reviewed journal.
Tipo di studio
Iscrizione (Stimato)
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
- Nome: Adel Alassaf, DDS
- Numero di telefono: +963 949038706
- Email: sx19adel@gmail.com
Luoghi di studio
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Governorate
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Damascus, Governorate, Siria, 4671
- Reclutamento
- Oral and Maxillofacial Surgery Hospital, Faculty of Dentistry, Damascus University, Mezzeh Highway, Damascus, Syria
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
- Adulto
- Adulto più anziano
Accetta volontari sani
Descrizione
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.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: N / A
- Modello interventistico: Assegnazione di gruppo singolo
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
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Sperimentale: Bone Ring Technique (BRT)
Eligible patients with posterior maxillary atrophy (RBH ≤4 mm) will undergo a single surgical session.
Preoperatively, CBCT will be performed.
Under local anesthesia, the surgeon will harvest an autogenous bone ring from the chin (mandibular symphysis) using trephine burs.
A lateral window will be created in the maxillary sinus wall using a straight handpiece with a diamond round bur.
The sinus membrane will be elevated, and the bone ring will be placed into the sinus.
A dental implant (ICX) will be inserted through the ring into the residual ridge.
The defect will be filled with xenograft particles and covered with a collagen membrane.
Sutures will be removed at 7-10 days.
Patients will be followed for 6 months with clinical and CBCT evaluations.
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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.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Implant Stability Quotient (ISQ).
Lasso di tempo: Immediately after implant placement (baseline) and 6 months post_surgery (before prosthetic loading).
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Measured by resonance frequency analysis with MEGA ISQ II (MegaGen, Korea), Four readings per implant (mesial, distal, buccal, lingual); mean value reported
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Immediately after implant placement (baseline) and 6 months post_surgery (before prosthetic loading).
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Vertical Bone Gain (mm)
Lasso di tempo: at preoperative, 1 week post_surgery , 6 months post_surgery
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Distance from implant shoulder to highest point of elevated sinus floor; measured on coronal sections using Ez3D plus software
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at preoperative, 1 week post_surgery , 6 months post_surgery
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Peri implant Bone Density (gray values)
Lasso di tempo: at preoperative, 1 week post_surgery , 6 months post_surgery
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regions of interest: coronal, middle, apical thirds
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at preoperative, 1 week post_surgery , 6 months post_surgery
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Implant Survival & Success
Lasso di tempo: 6 months post_surgery
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Survival = implant in situ.
Success = absence of mobility, persistent pain, peri implant radiolucency, suppuration; and crestal bone loss <1.5 mm on CBCT.
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6 months post_surgery
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Collaboratori e investigatori
Sponsor
Investigatori
- Direttore dello studio: Khaldoun Darwich, DDS MSc PhD, Damascus University Syria
Pubblicazioni e link utili
Pubblicazioni generali
- Omara M, Abdelwahed N, Ahmed M, Hindy M. Simultaneous implant placement with ridge augmentation using an autogenous bone ring transplant. Int J Oral Maxillofac Surg. 2016 Apr;45(4):535-44. doi: 10.1016/j.ijom.2015.11.001. Epub 2015 Nov 28.
- Alchalabi NJ, Merza AM, Issa SA. Using Carnoy's Solution in Treatment of Keratocystic Odontogenic Tumor. Ann Maxillofac Surg. 2017 Jan-Jun;7(1):51-56. doi: 10.4103/ams.ams_127_16.
- Giesenhagen B, Martin N, Donkiewicz P, Peric Kacarevic Z, Smeets R, Jung O, Schnettler R, Barbeck M. Vertical bone augmentation in a single-tooth gap with an allogenic bone ring: Clinical considerations. J Esthet Restor Dent. 2018 Nov;30(6):480-483. doi: 10.1111/jerd.12392. Epub 2018 Aug 2.
- Giesenhagen B, Martin N, Jung O, Barbeck M. Bone Augmentation and Simultaneous Implant Placement with Allogenic Bone Rings and Analysis of Its Purification Success. Materials (Basel). 2019 Apr 19;12(8):1291. doi: 10.3390/ma12081291.
- Sleman N, Khalil A. Autogenous bone ring augmentation and simultaneous implant placement in the atrophic posterior maxilla: A case report. Int J Surg Case Rep. 2025 Feb;127:110970. doi: 10.1016/j.ijscr.2025.110970. Epub 2025 Jan 27.
- Nunes MP, Nunes LFP, Filho DPN, Pinho RCM, Cimoes R. Bone Ring Technique for the Treatment of Vertical and Horizontal Bone Defects with Immediate Implants: A Report of Two Cases. Int J Periodontics Restorative Dent. 2021 May-Jun;41(3):413-421. doi: 10.11607/prd.4401.
- Nunes MP, Nunes LFP, Ribeiro JCB, Mourao Pinho RC, Cimoes R. Maxillary Sinus Elevation Using the Bone Ring Technique with Immediate Implantation: A Case Report. Int J Periodontics Restorative Dent. 2022 Jul-Aug;42(4):525-533. doi: 10.11607/prd.4746.
- Arab HR, Moeintaghavi A, Shiezadeh F, Nezhad MH. Crestal Sinus Floor Elevation with Autogenous Press-Fit Dowel Bone Harvested Using Trephine Drills: A New Method. J Long Term Eff Med Implants. 2018;28(3):209-214. doi: 10.1615/JLongTermEffMedImplants.2018017280.
- Saez-Alcaide LM, Brinkmann JC, Sanchez-Labrador L, Perez-Gonzalez F, Molinero-Mourelle P, Lopez-Quiles J. Effectiveness of the bone ring technique and simultaneous implant placement for vertical ridge augmentation: a systematic review. Int J Implant Dent. 2020 Dec 12;6(1):82. doi: 10.1186/s40729-020-00280-0.
- Flanagan D. Cylindrical Ringbone Allograft to Restore Atrophic Implant Sites: A Pilot Study. J Oral Implantol. 2016 Apr;42(2):159-63. doi: 10.1563/aaid-joi-D-15-00052. Epub 2015 Sep 8.
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Studia le date principali
Inizio studio (Effettivo)
Completamento primario (Stimato)
Completamento dello studio (Stimato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Termini MeSH pertinenti aggiuntivi
- Malattie ossee
- Malattie muscoloscheletriche
- Malattie stomatognatiche
- Malattie della mascella
- Anomalie della mascella
- Anomalie maxillo-facciali
- Anomalie craniofacciali
- Anomalie muscoloscheletriche
- Malattie mandibolari
- Anomalie del sistema stomatognatico
- Anomalie congenite
- Malattie e anomalie congenite, ereditarie e neonatali
- Retrognazia
- Riassorbimento osseo
Altri numeri di identificazione dello studio
- UDDS-2026-OralMaxillofacial-01
- DN-28102025-542 (Altro identificatore: Ethics committee, Damascus University)
Piano per i dati dei singoli partecipanti (IPD)
Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?
Descrizione del piano IPD
De-identified individual participant data that underlie the results reported in the publication, specifically: Implant Stability Quotient (ISQ) values, vertical bone gain measurements (mm), and peri-implant bone density values (Hounsfield-like units).
Beginning 6 months after publication of the primary results. Data will be available for a period of 3 years.
With Researchers who submit a methodologically sound research proposal to the principal investigator, To achieve the aims specified in the approved research proposal, particularly for individual participant data meta-analysis or secondary analyses of maxillary sinus augmentation techniques
Periodo di condivisione IPD
Criteri di accesso alla condivisione IPD
Tipo di informazioni di supporto alla condivisione IPD
- STUDIO_PROTOCOLLO
- LINFA
- ICF
Informazioni su farmaci e dispositivi, documenti di studio
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