Clinical and Radiographic Outcomes of Implant-supported Full-ceramic Partial Fixed Dental Prostheses With Cantilever Extension: A Proof of Principle Study With a Follow-up of at Least 1 Year
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 35
- 试验地点
- 1
- 主要终点
- Implant survival rate
研究概览
简要总结
To report the clinical and radiographic outcomes of implant-supported fixed dental prostheses with full-ceramic cantilever extensions (FDPCs) after a function time ≥ 12 months.
详细描述
Patients with full ceramic FDPCs in anterior and posterior areas will be clinically and radiographically re-evaluated. Mesial and distal radiographic marginal bone levels (mBLs) from baseline (i.e. delivery of FDPC) to the follow-up examination were calculated and compared between implant surfaces adjacent to and distant from the cantilever extension. Implant survival rate (%), pocket probing depth (PPD), presence/ absence of bleeding on probing (BoP) and presence/absence of mechanical/technical and biological complications were recorded.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 99 Years(Adult, Older Adult)
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients aged ≥18 years
- •Written informed consent
- •Patients with systemic health or controlled medical conditions
- •Patients with healthy or treated periodontal conditions
- •Patients enrolled in regular supportive periodontal therapy (SPT)
- •Patients without clinical signs of bruxism and/or oral parafunctions
- •2 osseointegrated dental implants in the canine or posterior areas of maxilla and mandible following transmucosal placement and healing of 3-6 months
- •Tissue level solid-screw implants with a sand-blasted and acid- etched (SLA) surface with an endosseous diameter of 3.3, 4.1 or 4.8 mm, a length of 8, 10 or 12 mm, a shoulder diameter of 4.8 mm and a supracrestal machined neck with a height of 1.8 or 2.8 mm (Straumann® Dental Implant System, Institut Straumann AG, Basel, Switzerland)
- •Full-ceramic
- •Utilization of prefabricated titanium abutments
- •Cemented (3M™ ESPE Ketac™ Cem, Seefeld, Germany) or screw-retained fixed dental prostheses with a mesial or distal cantilever extension (FDPCs)
- •Cantilever extension corresponding to 1 premolar unit (i.e., 6-7 mm)
- •Absence of occlusal contacts or guidance on the cantilever extension at baseline
- •Opposing dentition consisting of natural teeth or fixed or removable prosthetic restorations
- •Availability of a periapical radiograph at baseline (i.e. FDPC delivery)
- •Availability of PPD measurements (mm) taken at baseline at 4 sites/implant with a graduated Michigan periodontal probe (Deppeler SA, Rolle, Switzerland)
- •Availability of BoP measurements (%) (Lang et al., 1986) taken at baseline at 4 sites/implant with a graduated Michigan periodontal probe (Deppeler SA, Rolle, Switzerland).
排除标准
- •Untreated or active periodontal diseases
- •Immediate implant placement (i.e., Type I implant placement according to Hämmerle et al., 2004)
- •FDPCs in the aesthetic zone (i.e., replacement of maxillary or mandibular incisors)
- •FDPCs supported by hollow-screw and hollow-cylinder implants
结局指标
主要结局
Implant survival rate
时间窗: 12 months
Percentage of dental implants present at follow-up visit
次要结局
- Peri-implant marginal bone level changes(12 months)
- Number of technical complications(12 months)
- Number of mechanical complications(12 months)
- Number of Biological complications(12 months)
