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Набор скоро начнётся NCT07619846

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

Без фазы С лечением Severe Alveolar Bone Atrophy of the Posterior Maxilla With Residual Bone Height ≤4 mm

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают
В протоколе указаны: Bone Ring Technique (BRT).
Кому может быть актуально
Состояния в реестре: Severe Alveolar Bone Atrophy of the Posterior Maxilla With Residual Bone Height ≤4 mm. Базовые параметры: 18 лет — 70 лет · Все.
Что важно проверить
Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится
Syria
Следующий шаг
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Официальное название

Evaluation of Effectiveness of Bone Ring Technique in One Stage Surgery of External Maxillary Sinus Lifting With Implantation: A Prospective Case Series

Обзор

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.

Подробное описание

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.

Вмешательства

  • Процедура Bone Ring Technique (BRT)
    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 bo

Первичные конечные точки

  • Implant Stability Quotient (ISQ). [Срок оценки: Immediately after implant placement (baseline) and 6 months post_surgery (before prosthetic loading).]
Вторичные конечные точки (3)
  • Vertical Bone Gain (mm) [Срок оценки: at preoperative, 1 week post_surgery , 6 months post_surgery]
  • Peri implant Bone Density (gray values) [Срок оценки: at preoperative, 1 week post_surgery , 6 months post_surgery]
  • Implant Survival & Success [Срок оценки: 6 months post_surgery]

Критерии участия

Критерии включения

  • 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.

Критерии исключения

  • 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.

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Распределение
Не применимо
Модель
Одна группа
Маскирование
Открытое
Основная цель
Лечение

Центры проведения

Syria · 1 центр
  • Oral and Maxillofacial Surgery Hospital, Faculty of Dentistry, Damascus University, Mezzeh — Damascus

Публикации

  • 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. PMID 28713736
  • 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. PMID 30070751
  • 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. PMID 31010149
  • 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. PMID 39879710
  • 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. PMID 34076639
  • 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. PMID 35830319
  • 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. PMID 30806279
  • 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. PMID 33313968

Идентификаторы

NCT: NCT07619846 · UDDS-2026-OralMaxillofacial-01 · DN-28102025-542

Первоисточники (государственные реестры)

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