A Randomized Controlled Clinical Trial Comparing Cemented Versus Screw-retained Implant-supported Single Crowns With Customized Zirconia Abutments
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 34
- 试验地点
- 1
- 主要终点
- Marginal bone level
研究概览
简要总结
The aim of this study is to test whether or not the use of screw-retained implant crowns on customized zirconia abutments results in biological, technical and esthetic outcomes similar to those obtained with cemented all-ceramic crowns on customized zirconia abutments, both made with a computer-aided design and manufacturing procedure (CAD/CAM).
The null-hypotheses is that marginal bone level change is equal at screw-retained and cemented crowns
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Supportive Care
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Single-tooth Straumann Bone Level in the anterior maxilla or mandible
- •At least one adjacent natural tooth present
- •Implant position enabling both screw-retained and cemented crown
- •Informed consent signed
排除标准
- •Smoking more than 15 cigarettes a day
- •Poor oral hygiene (Plaque index over 30%)
- •Pregnancy at the date of inclusion
研究组 & 干预措施
Cemented single crowns
Cemented single crown: zirconia abutment (Straumann Cares abutment) with an all-ceramic lithium disilicate crown
干预措施: Cemented crowns (Procedure)
Screw-retained single crown
Screw-retained single crown: zirconia abutment (Straumann Cares abutment), directly veneered with veneering ceramic
干预措施: Screw-retained crowns (Procedure)
结局指标
主要结局
Marginal bone level
时间窗: 5 years
The bone level represents an indicator of the osseointegration and biological success of the implant.
次要结局
- Biological, technical and esthetic outcome(up to 5 years)