Efficiency of Rigid Versus Non-rigid Indirect Anchorage During Canine Retraction: A Split Mouth Randomized Study
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 15
- 试验地点
- 1
- 主要终点
- anchorage loss
研究概览
简要总结
Indirect anchorage (In-A) has been broadly used for anchorage reinforcement during anterior segment retraction. The study compared between the efficacy of rigid vs non-rigid connections of In-A i during upper canine retraction in dentoalveolar protrusion cases
详细描述
Fifteen female patients with dentoalveolar protrusion were included in this study. A miniscrew was inserted following levelling and alignment between the upper first molar and second premolar of both sides. Randomization was applied before first premolar extraction where one side of the arch received a rigid indirect anchorage connection (Group I) of 0.019 x 0.025-inch stainless steel (St.St) archwire from the miniscrew to the auxiliary tube of the upper first molar band, and the other side received a non-rigid indirect anchorage connection (Group II) of 0.014-inch St.St ligature ligating the upper second premolar to the miniscrew. Canine retraction was performed on 0.017 x 0.025-inch St.St archwire applying 1.5 N retraction force. The duration of the study was 7 months. Data was collected from digitized models where anchorage loss of the upper first molar relative to the frontal plane and the vertical position of the upper second premolar were measured
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)
入排标准
- 年龄范围
- 13 Years 至 23 Years（Child, Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Adult females Bimaxillary protrusion requiring first premolars extractions Full permanent dentition Good oral hygiene
排除标准
- •History of previous orthodontic treatment Abnormalities in teeth size and/or shape Vertical, transverse, or anteroposterior skeletal discrepancies Anti-inflammatory medication
结局指标
主要结局
anchorage loss
时间窗: 4 month
amount of anchorage loss of the upper first molar during canine retraction using digital model in mm.
次要结局
- vertical position of the upper second premolar(4 month)