Vertical and Horizontal Alveolar Ridge Augmentation Using Autogenous Onlay Ring Blocks Combined With Simultaneous Guided Bone Regeneration Using Native Collagen Membrane in Atrophic Anterior Maxilla.
试验速览
- 阶段
- 不适用
- 入组人数
- 10
- 主要终点
- Bone gained vertically
研究概览
简要总结
Many different techniques exist for effective vertical bone augmentation, such as the use of particulate bone grafts and bone graft substitutes, barrier membranes for guided bone regeneration (GBR), autogenous and allogenic block grafts, and the application of distraction osteogenesis. Harvesting of autogenous block grafts is associated with greater morbidity compared with the less invasive procedure of using autogenous particles harvested through bone scrapers. On the other hand, particulate grafts always require a space-maintaining barrier, or their physical properties would not allow three-dimensional bone regeneration as those of block grafts do.
详细描述
An autogenous ring block is harvested from the chin area by trephine bur and the autogenous bone chips will be collected with a bone scraper, then a specially manufactured machine titanium tenting screw is used to fasten the ring block to the alveolar ridge. Two or three ring blocks is screwed according to the defect. Then resorbable collagen membrane is fixed to the alveolar ridge instead of the titanium-reinforced e-PTFE and equally autogenous and xenograft bone particles is packed around the screw to fill the defect area completely. Extreme care is taken to avoid autogenous particles drifting distally toward the area of the block. The barrier membrane was then closed over the block and particulate graft and fixed by bone tacks. Then periosteal releasing incision is done to allow tension free adaption of the mucoperisteal flap.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 25 Years 至 60 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients with partially edentulous in the anterior area of the maxilla, with a residual ridge that allowed insertion of ≤11.5 mm length implants.
- •Both sexes.
- •No intraoral soft and hard tissue pathology
- •No systemic condition that contraindicate implant placement.
排除标准
- •Pathology.
- •Heavy smokers more than 20 cigarettes per day.
- •Patients with systemic disease that may affect normal healing.
- •Psychiatric problems
- •Disorders to implant are related to history of radiation therapy to the head and neck neoplasia, or bone augmentation to implant site
- •Immunodeficiency pathology, bruxism, stress situation (socially or professionally), emotional instability, and unrealistic aesthetic demands.
研究组 & 干预措施
autogenous ring blockls with GBR covered by collagen membrane
Vertical and horizontal ridge augmentation using autogenous onlay ring blocks combined with simultaneous guided bone regeneration using native collagen membrane in atrophic anterior maxilla.
干预措施: autogenous ring blockls with GBR covered by collagen membrane (Device)
结局指标
主要结局
Bone gained vertically
时间窗: 6 months
Amount of bone gained vertically will be measured using CBCT
次要结局
未报告次要终点
研究者
Reham Moemen Abdel Salam Dewedar
Principal Investigator
Cairo University