Micro-abrasive Blasting vs Acid Etching of Orthodontic Bracket Bases: A Scanning Electron Microscope Study and an Eighteen Month Randomized Clinical Control
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 340
- 试验地点
- 1
- 主要终点
- Bond Failure Rate
研究概览
简要总结
To describe a method of acid etching the base of a bracket, and to compare the bond failures between micro-abrasive blasted (sandblasted) brackets and acid etched brackets over an eighteen month period
详细描述
The aims of this randomized control trial are:
- To describe a method to chemically etch the bases of stainless steel orthodontic brackets.
- To observe the changes in the micro-structure of the brackets with sandblasted bases and acid-etched bases under an electron microscope.
- To compare the failure of orthodontic brackets with a chemical etched base versus a sandblasted base bonded with composite using the conventional acid etch technique, over a follow-up of 18 months
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
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients about to undergo fixed orthodontic therapy
排除标准
- •Patients with cavities, history of fixed orthodontic therapy, recent bleaching
研究组 & 干预措施
Acid etched brackets
Stainless steel bracket base etched with 10% Hydrofluoric acid for 1 minute
干预措施: Acid etched brackets (Device)
Sandblasted brackets
Stainless steel bracket sandblasted base
干预措施: Sandblasted brackets (Device)
结局指标
主要结局
Bond Failure Rate
时间窗: 18 months after placement of brackets on the teeth
To compare the bond failure rates between acid etched and sandblasted brackets. Done by calculating and comparing the percentages of bracket breakages between the acid etched and sandblasted bracket quadrants.
次要结局
未报告次要终点
研究者
Owais Khalid Durrani
Professor of Orthodonitcs
Riphah International University