A Study Into the Effects of Different Ligation Techniques on Orthodontic Mandibular Incisor Alignment
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 120
- 试验地点
- 2
- 主要终点
- Little's irregularity index.
研究概览
简要总结
Fixed braces (appliances) are used to straighten the malalignment of teeth. There has been a lot of research into the factors that can affect the speed of alignment of teeth but there has been very little research on how different techniques of wire attachment to the brace (ligation) can affect this.
The randomised clinical trial of 100 patients aims to compare the speed of alignment of the lower (mandibular) front teeth (incisors) using two different techniques over a period of 12 weeks. Both techniques use the conventional small elastic rings (modules) that are placed over each metal square (bracket) but they will be tied in a different configuration for each group. We will also observe any differences in the distances between the corresponding teeth either side of the lower jaw for each group and the bracket failure rates.
详细描述
The research protocol has been devised by Rachel Little (Specialty Registrar in Orthodontics), under the supervision of Mr David Spary (Consultant in Orthodontics) and Dr Ashish Dhopatkar (Head of Orthodontics, Birmingham Dental School).
Purpose:
In this study I intend to find out whether friction plays a part in lower incisor alignment by comparing different ligation techniques. If I can show that the speed of alignment is affected by different techniques, this will be an important finding for orthodontic treatment.
Aims:
This study aims to determine whether increased friction caused by ligation with figure of eight modules effects the speed of lower incisor alignment.
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
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 12 Years 至 15 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients at Burton Hospital
- •12-15 years of age at the start of treatment
- •No medical contraindications
- •Permanent dentition
- •Mandibular incisor irregularity of 5-10mm (using Little's irregularity index)
- •No other therapeutic intervention e.g. elastics, coils
- •Informed consent gained
排除标准
- •Presence of a craniofacial syndrome
- •Patients already participating in a research study
结局指标
主要结局
Little's irregularity index.
时间窗: up to12 weeks
Mandibular incisor irregularity index reduction using Little's irregularity index.
次要结局
- Intercanine width.(0, 6, 12 weeks)
研究者
Rachel Little
Specialty Registrar in Orthodontics
University of Birmingham