Gingival Response and Marginal Adaptation of Zirconia Crowns With Two Subgingival Margin Designs: A Randomized Clinical Trial
试验速览
- 阶段
- 不适用
- 入组人数
- 30
- 主要终点
- Position of the margin of the restoration in relation to the gingival margin position
研究概览
简要总结
The aim of the study is to evaluate the effect of feather edge finish line and deep chamfer finish line on gingival position, bleeding on probing and marginal adaptation.
详细描述
The aim of the study is to evaluate the effect of feather edge finish line and deep chamfer finish line on gingival position, bleeding on probing and marginal adaptation.
Gingival bleeding on probing will be evaluated before treatment. Preparation for all ceramic full coverage restoration will be performed according to manufacturer instructions by one operator. Type of finish line (whether feather edge or deep chamfer finish line) will be selected randomly according to a computer generated randomization list. Restorative margins will be placed subgingivally. Zirconia crowns will be fabricated for the prepared teeth and cemented using resin luting agent. At 6 months and 12 months after the cementation, restorative margin position relative to the gingival margin will be recorded. Bleeding on probing and marginal adaptation will also be recorded.
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
- •Patients 18 years to 50 years old
- •Dentate patients planned for a single full coverage restoration in the posterior area.
- •Patients with no active periodontal disease.
- •>2mm of keratinized tissue
排除标准
- •Smoking (>10 cigarettes a day)
- •Substance abuse history
- •Patients with poor oral hygiene and high caries index
- •Patients suffering from abnormal occlusal habits for example clenching or bruxism
- •Local or systemic disease (endocrine, renal, hematologic, hepatic, immunosuppressive)
- •Current steroid/chemotherapy
- •Head and neck irradiation
- •Pregnancy
- •Inability or unwillingness to return for follow up visits.
结局指标
主要结局
Position of the margin of the restoration in relation to the gingival margin position
时间窗: 1 year
Scoring proposed by Paniz et al classified into either subgingival (not visible), equigingival (slightly visible) and supragingival (visible)
次要结局
- Bleeding on probing(1 year)
研究者
Heba Ahmed Hassan El-Khayat
Principal Investigator
Cairo University