Comparative evaluation of occlusal wear of polished CAD CAM fabricated translucent zirconia, polished heat pressed lithium disilicate crowns and natural antagonist enamel – a split mouth pilot study
试验速览
- 阶段
- 2 期
- 状态
- 尚未招募
- 发起方
- 入组人数
- 12
- 试验地点
- 1
- 主要终点
- To evaluate the occlusal wear of polished translucent zirconia and polished heat pressed lithium disilicate crowns by natural antagonistic teeth in micro meters
研究概览
简要总结
Wear is the gradual removal of material from surfaces as the result of mechanical or chemical injuries, it can occur through 3 processes erosion attrition and abrasion. Various studies have evaluated the wear of translucent monolithic zirconia and lithium disilicate against natural teeth in laboratory (in vitro) and clinical studies but up to best of our knowledge clinical studies evaluating the wear of CAD CAM fabricated translucent zirconia and heat pressed lithium disilicate against natural enamel is not present . Therefore this study compares and evaluates the occlusal wear of polished CAD CAM fabricated translucent zirconia polished heat pressed lithium disilicate crowns and natural antagonist enamel 24 hours after cementation and 1 year after cementation.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 盲法
- Outcome Assessor Blinded
入排标准
- 年龄范围
- 18.00 Year(s) 至 45.00 Year(s)（—）
- 性别
- All
入选标准
- •1.Patients requiring bilateral posterior maxillary or mandibular complete crowns.
- •2.Teeth selected for zirconia crown preparation should be restorable with a minimum crown to root ratio of at least 1:
- •3.Teeth with healthy opposing natural teeth.
- •4.Patients with good oral hygiene and periodontal status.
- •5.Patients with full complement of teeth (excluding 3rd molars).
- •6.Patients who will be available for the required follow up period.
- •8.Patient in age group 18-45 years will be enrolled.
排除标准
- •1.Patients with developmental defects of enamel and dentin.
- •2.Parafunctional habits like bruxism, clenching.
- •3.Temporomandibular joint disorders.
- •4.Patients with fluorosis, calcium metabolic disorders, osteoporosis.
结局指标
主要结局
To evaluate the occlusal wear of polished translucent zirconia and polished heat pressed lithium disilicate crowns by natural antagonistic teeth in micro meters
时间窗: 24 hours after cementation and 1 year after cementation of crown
2.To evaluate the occlusal wear of natural antagonistic enamel by polished translucent zirconia and polished heat pressed lithium disilicate crowns in micro meters
时间窗: 24 hours after cementation and 1 year after cementation of crown
次要结局
- 1.To evaluate the occlusal wear of natural enamel antagonistic with natural enamel(control).(2.To compare the wear of polished translucent zirconia, polished lithium disilicate crowns, and natural enamel with each other and with control.)
研究者
PoovithaM
All India Institute of Medical Sciences New Delhi