Changes in Arch Parameters After Molar Distalization; Hybrid Hyrax Distalizer Versus Pendulum in Adolescent Class II Patients Prospective Randomized Clinical Study
试验速览
- 阶段
- 不适用
- 状态
- Enrolling By Invitation
- 发起方
- 入组人数
- 30
- 试验地点
- 2
- 主要终点
- Angles in degree SNA,SNB,ANB, Molar Rotation
研究概览
简要总结
this study was to compare the changes in arch parameters after molar distalization; hybrid hyrax distalizer versus Pendulum distalizer using CBCT.
详细描述
Evaluation of maxillary molar amount of distal movement and the amount of anchorage loss Arch length, arch width, arch depth
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
- None
入排标准
- 年龄范围
- 13 Years 至 17 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •For group 1(Hybrid hyrax distalizer) Patients suffering maxillary collapse with a skeletal background with unilateral or bilateral posterior crossbite.
- •For group 2 (Pendulum distalizer) Patients with skeletal class I or class II malocclusion who needed upper first and second molar distalization for incisor retraction or relieving of the upper arch crowding and minimum or no crowding in lower jaw were selected.
- •All Patients had no systemic diseases that may affect bone quality or interfere with orthodontic treatment, periodontal disease and no previous orthodontic treatment.
- •Age range was 13 to 17 years.
排除标准
- •Missed upper first molar.
- •un-cooperative patient
研究组 & 干预措施
Pendulum distalizer device
Modified pendulum with miniscrews for 6 months for maxillary molar distal movement in class II angle malocclusion
干预措施: Pendulum distalizer (Device)
Pendulum distalizer device
Modified pendulum with miniscrews for 6 months for maxillary molar distal movement in class II angle malocclusion
干预措施: Hybrid hyrax distalizer (Device)
Hybrid hyrax distalizer
Inverted hyrax with 2 miniscrews for 6 months for maxillary molar distal movement in class II angle malocclusion
干预措施: Hybrid hyrax distalizer (Device)
Hybrid hyrax distalizer
Inverted hyrax with 2 miniscrews for 6 months for maxillary molar distal movement in class II angle malocclusion
干预措施: Pendulum distalizer (Device)
结局指标
主要结局
Angles in degree SNA,SNB,ANB, Molar Rotation
时间窗: 6 months
Using cbct and cast
Arch parameters in millimeter Arch length, width,depth and circumference
时间窗: 6 Months
Assessment of airway using cbct
次要结局
- Nasopharyngeal airway dimensions in Cubic centimeters(6 months)
研究者
Mohamed Abdelrhman Shendy Abdelrhman
Lecturer
Al-Azhar University