Three-dimensional Evaluation of the Airway Morphology After En-masse Retraction in Bimaxillary Protrusion Patients by Using Cone Beam Computed Tomography
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 入组人数
- 20
- 试验地点
- 1
- 主要终点
- assess the changes in the airway morphology
研究概览
简要总结
This study aims to three-dimensionally assess the changes in the airway morphology after anterior segment retraction using maximum anchorage.
详细描述
Participants were recruited from the Faculty of Dentistry, Beni-Suef University. All subjects were informed of the treatment procedures and signed a consent form.
Methodology:
The patients were treated by using fixed appliance and extraction of four first premolars. Maximum anchorage was obtained by using miniscrews that were inserted between the maxillary first molars and second premolars. En masse retraction of the upper and lower anterior segments was carried out by using NiTi closed coil springs.
Cone beam computed tomography (CBCT) will be obtained before (T0) and after en masse retraction (T1). CBCT will be used for three-dimensional evaluation of the changes of the airway morphology after en masse retraction of the upper and lower anterior segments with maximum anchorage.
The results will be obtained and statistically evaluated.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Class I bimaxillary protrusion requiring extraction of four first premolars and en masse retraction of the anterior segments.
- •Age: 18 - 35 years old.
- •Fair oral hygiene.
排除标准
- •Active periodontal disease.
- •Systemic diseases or medications that alter bone metabolism.
结局指标
主要结局
assess the changes in the airway morphology
时间窗: 6 months
measure the airway volume before and after treatment
次要结局
未报告次要终点
研究者
Rehab Abd El Razek Abd El Aziz Khalil
Lecturer of Orthodontics
Beni-Suef University