Accuracy of Implant Impression Techniques Using Scannable Healing Abutments Versus Conventional Methods. A Controlled Clinical Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 22
- 试验地点
- 1
- 主要终点
- Three-dimensional implant positional accuracy (RMS deviation)
研究概览
简要总结
This prospective controlled clinical trial evaluates the three-dimensional positional accuracy of implant-level impressions obtained using scannable healing abutments compared with conventional open-tray and closed-tray impression techniques in partially edentulous patients with unilateral free-end saddle situations.
详细描述
Accurate transfer of implant position is critical for achieving passive fit of implant-supported prostheses. This study compares the trueness of implant impressions obtained using a digital workflow based on scannable healing abutments with conventional open-tray and closed-tray impression techniques. Twenty-two partially edentulous patients with unilateral distal extension ridges will undergo all three impression techniques. Three-dimensional deviations will be quantified using best-fit superimposition and root mean square analysis, with the open-tray technique serving as the reference standard.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Crossover
- 主要目的
- Diagnostic
- 盲法
- None
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
- 否
入选标准
- •Partially edentulous patients with unilateral free-end saddle (Kennedy Class II)
- •Adequate bone for two implants
- •Good systemic health
- •Ability to provide informed consent
排除标准
- •Active periodontal disease
- •Poor oral hygiene
- •Parafunctional habits
- •Temporomandibular disorders
- •Heavy smoking (>10 cigarettes/day)
研究组 & 干预措施
Scannable Healing Abutment Digital Impression
Intraoral digital impression using scannable healing abutments and an intraoral scanner.
干预措施: Digital implant impression using scannable healing abutments (Procedure)
Open-Tray Conventional Impression
Conventional splinted open-tray implant impression using polyvinyl siloxane.
干预措施: Open-tray implant impression (Procedure)
Closed-Tray Conventional Impression
Conventional closed-tray implant impression using polyvinyl siloxane.
干预措施: Closed-tray implant impression (Procedure)
结局指标
主要结局
Three-dimensional implant positional accuracy (RMS deviation)
时间窗: Periprocedural (single assessment, 1 week after second-stage implant surgery)
Root mean square (RMS) deviation (µm) between test impressions and the open-tray reference model using 3D metrology software.
次要结局
- Comparison of implant positional accuracy between impression techniques(Periprocedural (single assessment, 1 week after second-stage implant surgery))
研究者
Sherif Aly Sadek
Associate Professor
Cairo University