Evaluation of Wear Behavior of Onlay Restorations Constructed From Two Types of Glass Ceramics
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 48
- 试验地点
- 1
- 主要终点
- Wear evaluation
研究概览
简要总结
The 1ry objective will be to evaluate the amount of wear of onlays restorations made from VITA AMBRIA & IPS e.max Press and their opposing natural teeth.
- The 2ry objective of the clinical trial will be to evaluate the fractures, retention, contact points, food impaction and radiographic examination of the VITA AMBRIA onlays compared with IPS e.max press onlays as defined by FDI criteria.
详细描述
A randomized controlled clinical trial, a double-blind (patient and examiner) is conducted by one trained and calibrated operators who perform all restorative procedures. The restorations are evaluated by a blind and calibrated two examiner using the FDI World Dental Federation criteria. A total of 24 patients will be randomly assigned to each group for a total of 48 patients. The randomization sequence will be generated (www.randomlists.com/team-generator) and to ensure the confidentiality of the allocation, this will be used opaque, sealed and numbered envelopes in series. These will be kept with an independent researcher for the moment of inclusion of the subjects.
Both groups will receive Onlay preparation . Digital impression by intra oral scanner will be taken, wax pattern for the onlay restoration will be designed and milled using CAD/CAM software. After that, the wax pattern will be invested and final onlay restoration will be constructed from VITA AMBRIA and IPS e.max press ingots according to manufacturing instructions. Primary outcome: The amount of wear will be evaluated according to FDI standard.
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
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 50 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •The patient is healthy.
- •18-50 years old.
- •Normal occlusion.
- •Good oral hygiene.
- •Tooth with complete root apex.
- •Tooth with moderate coronal decay.
排除标准
- •Patient Incapable of self-care, mental illness, undergoing radiotherapy, diabetic patient, allergy to one of the materials used, pregnancy, smoker, parafunctional habits, poor oral hygiene, severe periodontitis, tooth need vital pulp therapy or surgical crown lengthening or marginal elevation, tooth with enamel or dentin hypoplasia or hypocalcification, Mallaligned or malformed teeth and adjacent or opposing teeth are missed.
结局指标
主要结局
Wear evaluation
时间窗: 1 year follow up
The amount of wear will be defined as follows: 1. Intra oral scanner will be used to scan the surface of the restorations and opposing natural enamel after achieving a complete dry surface by isolation. 2. The recordings that measured at base line and 12 month periods will be superimposed on each other by specific software. 3. Mean values and standard deviations of the amount of wear for all restorations' and opposing enamel's will be statistically analyzed.
次要结局
- contact points and food impaction(1 year follow up)
- Radiographic examination(1 year follow up)
研究者
Abd Elaziz Helmy Abd Elaziz Mahmoud Elhamrawy
Assistant lecturer, Department of Crown&Bridge,Al-Azhar Unverisity
Al-Azhar University