Comparative evaluation of marginal and internal fit of single posterior implant retained crown fabricated using conventional and digital impression workflow- an in vivo study.
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- • To evaluate marginal and internal fit of single posterior implant retained crown fabricated using conventional and digital impression workflow
研究概览
简要总结
Implant-supported fixed dental prostheses have become a well-accepted treatment option with acceptable success rates for partially edentulous patients. This success can only be achieved with a precise fit of the implant supported restoration, which is critical to the long-term success of any dental restoration. The gap between the implant abutment and the restoration allows bacteria to adhere, causing inflammatory reaction in the peri implant soft tissues and biologic complications of the surrounding tissues.
Conventional fixture-level implant impression techniques in combination with master casts and porcelain fused to metal (PFM) crowns still represent the gold standard in the manufacturing process of fixed implant-supported restorations. However, it is often associated with long time-consuming appointment, complex technique sensitive fabrication steps using expensive equipment, materials, as well as patient related hindrances like suffocation hazard, gagging and taste irritation during the impression taking procedures. An alternative to the well-established conventional impression technique is the next gen digital approach. The clinical patient situation is virtually registered with a contact-free transfer using an intraoral optical scanner (IOS) system.
With regard to accuracy, clinical and in vitro studies have reported variability in results when comparing digital scanning with conventional impression procedures for tooth supported fixed partial dentures. Additionally, the accuracy of digital scanning has been reported to depend on the scanning protocol, operator experience and training, type of arch scans, and use of a reflective agent.
Although many in vitro studies have been conducted to evaluate marginal and internal fit of implant supported restorations, very few in vivo studies have been carried out to evaluate the same.
So, the objective of this in vivo study is to evaluate and compare marginal and internal fit of implant retained prostheses fabricated using conventional and digital workflow.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 盲法
- Participant and Outcome Assessor Blinded
入排标准
- 年龄范围
- 21.00 Year(s) 至 60.00 Year(s)（—）
- 性别
- All
入选标准
- •1 Patient age between 21-60 years.
- •2 Patient in need of an implant supported crown in the molar region who have successfully completed stage 1 of implant treatment.
- •3 Absence of any medical condition.
- •4 Absence of any periodontal disease.
- •5 Opposing dentition should be natural teeth or fixed definitive restoration on teeth or implant.
- •6 Presence of at least one intact adjacent tooth or fixed definitive restoration on teeth or implant.
- •7 Patients who are willing to participate in the present study and willing sign the informed consent form.
排除标准
- •1 Participants with inadequate oral hygiene.
- •3 Presence of periapical radiolucency at adjacent teeth.
- •4 Periodontitis or persistent intraoral infections.
- •5 Absence of adjacent teeth.
- •6 Untreated mucosal diseases.
- •7 Presence of parafunctional habits.
结局指标
主要结局
• To evaluate marginal and internal fit of single posterior implant retained crown fabricated using conventional and digital impression workflow
时间窗: • baseline
次要结局
- • To compare marginal & internal fit of single posterior implant retained crown fabricated using conventional & digital impression workflow.(baseline)
研究者
Prerna Suresh Kalyani
KLE VK INSTITUTE OF DENTAL SCIENCE