Evaluation of Treatment Duration of En-masse Versus Two Steps Retraction in Patients Having Maxillary Protrusion: A Randomized Clinical Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 30
- 试验地点
- 2
- 主要终点
- Time to close extraction space
研究概览
简要总结
Brief summary: there's a scarcity in literature concerning time needed to retract anterior segment following premolars extraction. the purpose of this study is to determine, in orthodontic patients with maxillary protrusion, which form of technique of retraction offers a faster treatment duration of retraction : en-masse or two step techniques
详细描述
Anterior segment retraction can be done in one of two ways: through En masse or two step techniques. Both are viable options, but, ideally, the investigator wanted to retract and complete the orthodontic treatment as quickly as possible, in order to decrease the negative effects that may occur during treatment. Which of these techniques results in a decreased treatment time is still up for debate.
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)
盲法说明
single ( Outcomes Assessor) Only the outcome assessors will be blind. The patients name will be sealed from pre and post radiographs and study models. Then two assessors will carry out, blindly and independently, the measurements and analysis of the study
入排标准
- 年龄范围
- 14 Years 至 24 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Adults and adolescent patients ( both gender)
- •Age range (14- 24)
- •patient with maxillary protrusion requiring first premolars extraction ( bimaxillary protrusion or class II division 1 cases)
- •patients with fully erupted permanent teeth ( not necessarily including the third molar).
- •cases required maximum anchorage during retraction.
- •good general and oral health
排除标准
- •patients suffering from any systemic diseases interfering with tooth movement.
- •patients with extracted or missing permanent teeth (except for third molars).
- •patients with badly decayed teeth.
- •patients with any parafunctional habits ( i.e. Bruxism, tongue thrusting, mouth breathing, etc.,.....)
- •patients with previous orthodontic treatment
结局指标
主要结局
Time to close extraction space
时间窗: from pre to post retraction ( an average of 10 - 12 months)
the antero-posterior movement of anterior teeth are assessed by monthly taken models and patient record sheets
次要结局
- Anchorage loss(From pre to post retraction ( an average of 10- 12 months))
- pain of intervention(From pre to post retraction ( an average of 10 - 12 months))
研究者
Aya Ahmed El Ashwal
principle investigator
Future University in Egypt