Clinical and Radiographic Performance of Preformed Zirconia Crowns and Stainless-Steel Crowns in Permanent First Molars: 18-Month Results of a Prospective, Randomized Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 20
- 试验地点
- 2
- 主要终点
- Number of zirconia and stainless steel crowns that showed successful retention over two years
研究概览
简要总结
The purpose of this study is to evaluate and compare the clinical and radiographic performance of zirconia and stainless steel crowns on permanent molar
详细描述
Zirconia and stainless steel crowns will be placed on at least two permanent molars, in a split mouth design. 100 patients will be included in the study. The teeth will be randomized into two groups according to the crown type.
Group 1: Zirconia crown 2: Stainless steel crown. Plaque index, gingival index, crown retention, presence of restoration failure, gingival margin extension and pulpal health of the teeth will be clinically evaluated at baseline and 1., 6., 12., 18., 24. months. The restorations will be evaluated radiographically at 6., 12. and 18. months. Intra-oral photos will be taken directly after treatment and at control appointments.
The data will be analysed statistically using Fisher's Exact Test and pearson's chi-square test; and Log-rank and the Kaplan-Meier will be used to estimate survival percentages.
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
- None
入排标准
- 年龄范围
- 6 Years 至 13 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients and parent of the patients who accept to participate and sign the informed consent
- •Patients who have at least two permanent molars with caries that require crown restoration
- •Patients that have good cooperation to the procedure
排除标准
- •Patients and parent of the patients who don't accept to participate and sign the informed consent
- •Teeth that doesn't have opposing permanent molars
- •Patients who have bruxism or deep-bite
- •Patient who are allergic to nickel
结局指标
主要结局
Number of zirconia and stainless steel crowns that showed successful retention over two years
时间窗: 2 years
Long-term clinical success of zirconia and stainless steel crowns placed on permanent molars
次要结局
未报告次要终点
研究者
Zafer Cavit Cehreli, DDS, PhD
Prof.Dr.
Hacettepe University