The Decrowding Rate Post Premolar Extraction With and Without Fixed Appliance: Randomized Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 40
- 试验地点
- 2
- 主要终点
- Anterior teeth alignment every 4 weeks at each time point.
研究概览
简要总结
In orthodontics, the teeth tend to move to the extraction space. This tooth movement becomes of larger importance when there is a crowding. During the COVID lockdown period, It was noted that some cases have a significant improvement and almost all the crowding was relieved without appliance activation.
详细描述
In this randomized controlled trial, a sufficient number of patients would be randomly assigned into two groups; one with braces and one without fixed braces.
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)
盲法说明
The two groups will have lingual arches. However, patients without braces will not be informed about their braces before 5 months of trial initiation.
入排标准
- 年龄范围
- 13 Years 至 30 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •- Patients with permanent dentition between age group of 13 - 30 years.
- •Maxillary or mandibular crowding >4.1mm and requiring extraction of maxillary first premolars or mandibular first premolars. The crowding will be measured using a caliper one cast models.
- •Fully erupted teeth from 1st molar to the 1st molar.
- •Patients with periodontally sound dentition.
- •Patients with good general health. No previous history of extraction or orthodontic tooth movement.
排除标准
- •Cases requiring orthognathic surgery.
- •History of systemic and medical illness.
- •Contraindication of extraction.
- •Previous history of orthodontic treatment.
- •Poor oral hygiene.
- •Nickel allergy.
结局指标
主要结局
Anterior teeth alignment every 4 weeks at each time point.
时间窗: 6 months
The cumulative before extraction and space closure for 4 months (mean difference before and after)..
次要结局
- Gingival invagination(9 months)
- Molar anchorage loss at each time point.(6 months)
研究者
Samer Mheissen
Researcher
Samer Mheissen