Clinical Outcomes of CAD/CAM Single-Retainer Monolithic Zirconia Ceramic Resin-Bonded Fixed Dentures Bonded With Two Different Resin Cements
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 20
- 试验地点
- 1
- 主要终点
- Survival rate of zirconia ceramic RBFDs
研究概览
简要总结
Congenitally missing tooth is one of the most common anomalies in human dentition. The treatment options of lateral incisor agenesis are closing the space with orthodontic treatment, implant treatment, conventional fixed dental prosthesis (FDPs) and resin-bonded fixed dentures (RBFDs). RBFDs are used frequently for single tooth absence in the anterior region due to their minimal invasive properties, high clinical success and patient satisfaction. With the development of new and stronger materials, RBFDs with metal framework have been replaced by glass ceramic, lithium disilicate, fiber-reinforced composite (FRC) and zirconia. The aim of this study is to evaluate the clinical performance of CAD/CAM single-retainer monolithic zirconia ceramic RBFDs which cemented with two different resin cements.
详细描述
The aim of this study is to evaluate the clinical performance of CAD/CAM single-retainer monolithic zirconia ceramic RBFDs which cemented with two different resin cements.
The project includes 20 patients. Most of the patients have been recruited from the Istanbul Medipol University Dental Clinics in Istanbul. The patients were selected from individuals who have unilateral or bilateral congenitally missing maxillary lateral teeth and wanted to be treated a restoration or undergoing orthodontic treatment.
After giving their consent to take part in the study no preparations were made on abutment teeth for RBFDs. Digital impressions were taken with an intraoral digital scanner. The RBFDs were designed using a CAD software, milled and presintered zirconia blocks (KatanaTM Zirconia HT, Kuraray Noritake Dental Inc, Tokyo, Japan). RBFD was adhesively bonded to abutment teeth with one of the two different resin cements (Panavia F2.0 or Panavia V5).
The control procedure is:
The restoration is evaluated according to presence of mobility or debonding and fracture at the connector area. Gingival harmony and periodontal tissues around the restorations were also examined. Mobility of the abutment tooth was checked in the clinical examination and alveolar bone was examined with periapical x-ray. The controls will take place after two weeks, one year, two years, three years and five years.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 80 Years（Adult, Older Adult）
- 接受健康志愿者
- 是
入选标准
- •Participating in the study voluntarily
- •Horizontal mobility of central incisors ≤1 mm
- •Central incisors with healthy alveolar bone
- •1-1,5 mm overjet
- •Having a good anterior guidance
排除标准
- •Patients with gingivitis or periodontitis Poor oral hygiene Central incisors with endodontic treatment or periapical disease Central teeth with large fillings or loss of dental structure on the cementation surface Bad oral habits Patients with clinical symptoms of bruxism
研究组 & 干预措施
Experimental: Panavia V5 resin cement
Resin cement with non-MDP monomer
干预措施: Panavia V5 resin cement (Device)
Experimental: Panavia F2.0 resin cement
Resin cement with MDP monomer
干预措施: Panavia F2.0 resin cement (Device)
结局指标
主要结局
Survival rate of zirconia ceramic RBFDs
时间窗: 5 years
The survival was evaluated as described in the studies of Chai et al. (1). They described the survival as "the period of time starting at the cementation of the restoration and ending when the restoration was shown to have irreparably failed". The fracture was evaluated according to the study of Heintze and Rousson (2). They made a classification for fracture of zirconia restorations. Three grades of fracture treatment were assigned to this classification: (1) Grade 1: Fracture surfaces were polished. (2) Grade 2: Fracture surfaces were repaired with resin-based composite. (3) Grade 3: Severe chipping fractures required replacement of affected prostheses. 1. Chai J, Chu FC, Newsome PR, et al: Retrospective survival analysis of 3-unit fixed-fixed and 2-unit cantilevered fixed partial dentures. J Oral Rehabil 2005;32:759-765 2. Heintze SD, Rousson V. Survival of zirconia- and metal-supported fixed dental prostheses: a systematic review. Int J Prosthodont 2010;23:493-502
次要结局
未报告次要终点