Radiographic Evaluation of the Peri-implant Circumferential Bone Level and Bone Changes in the Posterior Mandible of All-on-4 Implant Prosthesis With Different Materials and Bar Construction Techniques
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 18
- 试验地点
- 2
- 主要终点
- bone changes
研究概览
简要总结
Eighteen patients will be selected from the outpatient clinic of the Prosthodontic Department, Faculty of Dentistry, Mansoura University seeking prosthetic rehabilitation.
patients will be randomly divided into three groups according to the framework materials: PEEK, Soft metal, and selective laser melting construction.
详细描述
All patients will receive conventional maxillary and mandibular complete dentures.
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The mandibular denture will be modified by shortening the flanges and cutting the posterior part till the 1st molar then 3D scanned for recording the correct dimension of each tooth to be concerned during the construction of the superstructure and the final prosthesis.
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Abutment level impression will be made, and the resultant cast will be 3D scanned for CAD/CAM construction of superstructure with abutments.
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patients will be randomly divided into three groups according to the framework materials: PEEK, Soft metal, and selective laser melting construction.
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The fit of the framework will be verified intraorally, and the final prosthesis will be digitally constructed; according to the dimensions of the scanned denture; to fit over the framework.
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
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 40 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Completely edentulous maxillary ridges and mandibular arch with four implants placed according to the All-on-4 distribution. All patients were recruited from the previous study.
- •All selected patients will be with sufficient inter-arch space and restorative space.
- •All selected patients will have healthy ridges covered by the compressible oral mucosa and free from any ridge flabbiness.
排除标准
- •History of para-functional habits (Bruxism, clenching), smoking, and alcoholism.
- •History of radiation therapy in the head and neck region.
结局指标
主要结局
bone changes
时间窗: 5 years
circumferential peri-implant bone changes in mm
次要结局
未报告次要终点