Wear Behavior of Milled Posterior Crowns Fabricated From the New Gradient Technology Monolithic Zirconia 5Y-TZP/3Y-TZP Compared to Lithium Disilicate: (Randomized Clinical Trial)
试验速览
- 阶段
- 不适用
- 入组人数
- 24
- 试验地点
- 1
- 主要终点
- The amount of occlusal wear in natural antagonist enamel caused by the restorative material
研究概览
简要总结
In-vitro studies do not represent the actual masticatory environment and cannot simulate the intricate chewing pattern. Hence, there is a need for an in vivo study evaluating the wear potential of the newly introduced strength - color gradient multilayered zirconia IPS e.max ZirCAD Prime (5Y-TZP/3Y-TZP) and compare it to Lithium Disilicate IPS e.max CAD which has proven to have favorable wear patterns.
详细描述
- There will be no difference in wear caused by monolithic Zirconia (5Y-TZP/3Y-TZP) IPS E-max ZirCad Prime and Lithium Disilicate IPS e.max CAD to the antagonist.
- There will be no difference in the wear of the new monolithic zirconia IPS e.max ZirCAD Prime and lithium disilicate IPS e.max CAD.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 21 Years 至 50 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •All subjects are required to:
- •1- Be aged 21-50 years old, be able to read and sign the informed consent document. 2- Psychologically and physically able to withstand conventional dental procedures.
- •3- Patients with mutilated posterior teeth indicated for full coverage restorations.
- •4- Patients with sound natural antagonists. 5- Able to attend punctually for preplanned visits and evaluation. 6- Have no active periodontal or pulpal diseases.
- •7- There should be no apparent loss or wear in opposing enamel.
排除标准
- •Patient with active resistant periodontal diseases.
- •Patients with parafunctional habits and bruxism.
- •Patients with poor oral hygiene, high caries risk and uncooperative patients. 3- Pregnant women.
- •Patients in the growth stage with partially erupted teeth. 5- Psychiatric problems or unrealistic expectations.
- •6- Lack of opposing dentition in the area of interest. 7- Restored occlusal surface opposing the planned restoration. 8- The presence of a removable or fixed orthodontic appliance.
研究组 & 干预措施
Lithium Disilicate IPS e.max crowns in posterior teeth
干预措施: Lithium Dislicate IPS e.max crown (Other)
Monolithic Zirconia (5Y-TZP/3-YTZP) crowns in posterior teeth
干预措施: monolithic zirconia (5Y-TZP/3-YTZ) ZirCAD Prime. (Other)
结局指标
主要结局
The amount of occlusal wear in natural antagonist enamel caused by the restorative material
时间窗: 1 year
The amount of occlusal wear in natural antagonist enamel, using digital superimposition of model scans after 1 year, measured in micrometer.
次要结局
- The amount of occlusal wear in the restorative material itself(1 year)
研究者
Noran El-sharkawi
principal investigator
Cairo University