Comparison of Perforated 3D Printed Metal Fixed Mandibular Retainer Versus Conventional Fixed Bonded Retainer 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
- 64
- 试验地点
- 1
- 主要终点
- Bond Failure
研究概览
简要总结
Although different materials of mandibular fixed retainer were discussed in the literature, there is contradicting evidence regarding the bond failure of Titanium fixed metal retainer, whether immediate or after 12 months. Moreover, insufficient evidence is present regarding 3D metal printed fixed mandibular retainers.
详细描述
In recent years a new possibility is available for dental practitioners: CAD-CAM technology and 3D printing, which find their application in all aspects of orthodontics. Orthodontists are already familiar with several products that use 3D printers (i.e. invisible aligners), also known as additive manufacturing, 3D printing is a technology whereby sequential layers of material are layered on top of one another to form an object23. Two recent articles reported the fabrication of a custom lingual retainer cut from a nickel-titanium block with CAD/CAM technology and a CAD/CAM Zirconium bar as a bonded mandibular fixed retainer.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 15 Years 至 35 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients with properly finished orthodontic treatment.
- •No sex predilection.
- •The presence of 4 permanent mandibular incisors and 2 permanent mandibular canines.
- •No active caries, restorations, fractures, or periodontal disease of previously mentioned teeth
- •Patients with good oral hygiene.
排除标准
- •Patients with no need of fixed mandibular retention.
- •Enamel hypoplasia or hypocalcification of mandibular anterior teeth.
- •Abnormal morphology of mandibular anterior teeth
- •Periodontal disease that contraindicates fixed orthodontic retention.
- •No or poor patient's compliance & bad oral hygiene.
- •Psychological problems.
研究组 & 干预措施
Conventional fixed retainer
multistrand or braided metal wire
干预措施: conventional fixed retainer (Other)
Perforated 3D printed metal fixed retainer
3D printed wire custom made to each patient after intraoral scanning
干预措施: perforated 3D printed metal fixed retainer (Other)
结局指标
主要结局
Bond Failure
时间窗: immediate up to 12 months
Counting number of teeth debonded immediately after placement of wire up to 12 months
次要结局
未报告次要终点
研究者
Mariam Alaa
Assistant Lecturer
Cairo University