Effect of Speed Sintering on Translucency and Microstructure of High Versus Low Translucent Zirconia Veneers: a Randomized Clinical Trial
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- Change in clinical performance
研究概览
简要总结
A Minimally invasive esthetic restorative approach with the advancement of highly translucent multilayered monolithic zirconia ceramic can provide minimal thickness that affords high strength and esthetics without the need for layering porcelain. The effect of sintering conditions on yttria-partially stabilized zirconia is essential for the long-term success of such restorations.
The study aims to evaluate the clinical performance of speed and conventional sintering on ultra-thin, highly translucent, multilayered zirconia laminate restorations with minimum invasive tooth preparation.
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, Investigator)
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •patients able to understand and sign the informed consent form.
- •physically and psychologically able to undergo conventional restorative procedures.
- •Good oral hygiene with no signs of periapical pathology or periodontal disease. (periodontal screening index 0-1).
- •Slight malposition.
- •Teeth with spacing.
- •Teeth with discoloration.
- •Patient having natural teeth as opposing dentition
排除标准
- •Insufficient surface enamel (60%).
- •Abutments with subgingival restorations or root caries.
- •Parafunctional habits.
- •Lack of opposite occluding dentition in the area intended for restoration.
- •mandibular prognathism and maxillary retrognathism
研究组 & 干预措施
Conventional sintering
干预措施: Laminate veneers with conventional sintering (Other)
Speed sintering
干预措施: Laminate veneers with speed sintering (Other)
结局指标
主要结局
Change in clinical performance
时间窗: Baseline, 3 months, 6 months, 9 months, 12 months
Patients will be recalled every 3 months for one year follow up. The clinical evaluation and color measurement will be based on the modified California Dental Association (CDA)/Ryge criteria of evaluation as shown Examiners will evaluate the zirconia Veneers for the following: 1. Color match. 2. Zirconia surface. 3. Marginal discoloration. 4. Marginal integrity. 5. Clinical evaluation of the completed restorations will be performed using a double-blind assessment method
次要结局
未报告次要终点
研究者
Hams Hamed Abdelrahman
Assistant lecturer of DPH and Clinical statistician
Alexandria University