Use of Xenogeneic Bone Graft Associated With Autogenous Bone Graft or Leukocyte-and-Platelet-Rich Fibrin (L-PRF) for Horizontal Bone Augmentation of Alveolar Ridge: A Randomized Controlled Clinical Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 28
- 试验地点
- 2
- 主要终点
- Micro-CT and Histometric analyses
研究概览
简要总结
The objective of this randomized controlled clinical trial was to evaluate the effects of particulate xenogeneic bone grafts associated with autogenous bone graft or Leukocyte-and-Platelet-Rich Fibrin (L-PRF) for horizontal alveolar ridge augmentation. Twenty-eight patients presenting edentulous regions and requiring horizontal bone augmentation prior to dental implant placement were included in this study and randomly divided into two groups according to the proposed guided bone regeneration (GBR) treatment.
Fourteen surgical sites corresponding to Group A received bone regeneration with particulate autogenous bone tissue associated with deproteinized bovine bone graft (Bio-Oss Small®; Geistlich AG, Wolhusen, Switzerland). In Group B, fourteen surgical sites were regenerated with deproteinized bovine bone graft (Bio-Oss Small®) associated with L-PRF. In both groups, the grafted region was protected by a collagen membrane (Bio-Gide® Compressed; Geistlich AG, Wolhusen, Switzerland) fixed to the buccal and palatal bone plates using titanium pins.
Cone-beam computed tomography (CBCT) scans were performed preoperatively, immediately after the GBR surgical procedure, after 8 months of GBR healing, and immediately after dental implant placement to measure linear and volumetric changes in the alveolar ridge. At the time of dental implant placement, after an average period of 8 months following the guided bone regeneration procedures, bone biopsies were taken from the grafted area for histological, histomorphometric, and micro-CT analysis.
After a period of 6 months, the dental implants were reopened to receive implant-supported prosthetic rehabilitation. Implant stability was assessed using resonance frequency analysis at the time of implant placement in the grafted area and after an average of 6 months during the reopening surgical stage. Patient pain perception following bone regeneration procedures was assessed using a visual analog scale. All obtained data were statistically analyzed.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 21 Years 至 74 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •a requirement for the placement of one to four dental implants exclusively in the maxilla;
- •insufficient horizontal bone remaining for dental implant placement (maximum width of 4mm);
- •sufficient vertical bone height for subsequent placement of dental implant(s).
排除标准
- •any contraindication for dental implant placement;
- •the need for vertical bone augmentation;
- •inflammatory or autoimmune disease in the oral cavity;
- •use of immunosuppressants, corticosteroids, or bisphosphonates;
- •a history of malignancy in the past 5 years;
- •patients reporting excessive alcohol consumption;
- •decompensated systemic condition;
- •uncontrolled periodontal disease;
- •insulin-dependent diabetic patients;
- •patients with blood-related diseases.
结局指标
主要结局
Micro-CT and Histometric analyses
时间窗: 8 months
After the period of 8 months from Horizontal Bone Augmentation of Alveolar Ridge, during the dental implant placement by guided surgery, bone samples will be collected at the same location of the implants preparation. The collected bone tissue will be prepared and submitted to Micro-CT and histometric analyses.
次要结局
- Dental Implants ISQ measurement(6 months)
研究者
Michel Reis Messora
Associate professor at the department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo-USP, Ribeirao Preto, São Paulo, Brazil
University of Sao Paulo