Early Versus Late Intermaxillary Elastics in Patients With Class II Malocclusion
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 20
- 试验地点
- 2
- 主要终点
- the change of the maxillary incisors inclination
研究概览
简要总结
This clinical trial aimed to compare the effect of immediate light short Class II elastics versus conventional Class II elastics on the skeletal, dental and soft tissues in patients with Class II malocclusion.
Participants with class II malocclusion divided into 2 groups; early group wore immediate light short Class II elastics and conventional group wore conventional Class II elastics on rigid stainless steel arch wires.
详细描述
Instrument and procedures I. Diagnostic Procedures
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Medical and dental history.
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Comprehensive clinical examination. a. Extraoral examination. b. Intraoral examination. c. Functional examination.
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Diagnostic records
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Photographs.
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Orthodontic study models.
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Radiographic records.
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Treatment plan II. Interventions
- Placement of pre-adjusted edgewise fixed orthodontic appliance.
- Disarticulation of occlusion by glass ionomer cement.
- Selection of the proper elastics size.
- Patient motivation and instructions.
- Follow up. III. Methods of data collection.
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
- 12 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Permanent dentition stage with fully erupted permanent teeth (excluding third molars).
- •Patients with increased overjet.
- •Patients with canine Class II malocclusion.
- •Treatment plan involves the use of a pre-adjusted edgewise fixed orthodontic appliance with a non-extraction approach.
排除标准
- •Patients with a gummy smile.
- •Obvious periodontal disease and gingival recession.
- •Vulnerable patients (orphans, subjects with mental disorders.... etc.).
结局指标
主要结局
the change of the maxillary incisors inclination
时间窗: from the beginning of the treatment till treatment was done about 15 months
The primary outcome of this study was to compare the effect of early light short elastics versus conventional elastics on the inclination of upper incisors in patients with canine Class II malocclusion. the Sella-Nasion angle was measured " cephalometric radiographic analysis" in degrees. the angle representing the maxillary incisors inclination "S-N angle" was measured before and after treatment by both protocols, then the amount of changes were compared.
次要结局
- treatment duration(from the beginning of the treatment till treatment was done about 15 months)
- the 3-dimensional effects of early light short Class II elastics versus conventional elastics on dental, skeletal, and soft tissues.(from the beginning of the treatment till treatment was done about 15 months)
- amount of gingival display during smile(from the beginning of the treatment till treatment was done about 15 months)