Evaluation of the Rate of En-masse Retraction in Orthodontic Patients With Maxillary Protrusion Using Friction Versus Frictionless Mechanics: 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
- 1
- 主要终点
- Retraction Rate
研究概览
简要总结
There's a scarcity in literature concerning en-masse retraction and its effect on the rate of tooth movement. The purpose of this study is to determine, In orthodontic patients with maxillary protrusion, which form of mechanics in en-masse retraction offers a faster rate of retraction; Friction or Frictionless Mechanics.
详细描述
The en-masse technique can be done in one of two ways: through friction or frictionless mechanics. Both are viable options, but, ideally, we want 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 mechanics 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
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 genders)
- •Age range (14-24)
- •Patients 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 requiring 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
Retraction Rate
时间窗: From pre to post retraction (an average of 6 - 8 months)
The antero-posterior movement of anterior teeth and first molars will be assessed by measuring the digitilized study models taken of the patients monthly (measured in mm)
次要结局
- Pain of intervention(From pre to post retraction/intervention (an average of 6 - 8 months))
- Anchorage Loss(From pre to post retraction (an average of 6 - 8 months))
- Molar Rotation(From pre to post retraction (an average of 6 - 8 months))
- Anterior teeth torque, extrusion/intrusion(From pre to post retraction (an average of 6 - 8 months))
研究者
Leena Alaa Shibl
Principle Investigator
Future University in Egypt