在Ni-ti叶弹扩张和快速大扩张后,自发的上第一扭曲的数字造上的三维评估:一个双中心随机对照试验
Andrea Abate1, Alessandro Ugolini1, Alessandro Bruni2
1Department of Sciences Integrated Surgical and Diagnostic, University of Genova, Genoa, Italy.
Orthodontics & craniofacial research
|September 8, 2024
概括
在正在成长的患者中,叶子扩展器 (Leaf Expander®) 显示出比快速上扩展器 (RME) 更多的自发性牙扭曲,当它固定在落叶的第二牙上时. 摩拉旋转与实现的膨胀程度相关.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 儿科牙科 儿科牙科
- 头骨面部的发展
背景情况:
- 大扩张是横向差异的常见正义牙科治疗方法.
- 了解自发的摩尔扭曲是优化治疗结果的关键.
- 在落叶牙上的定会影响成长期患者的治疗效果.
研究的目的:
- 为了比较Leaf Expander®和快速大扩展器 (RME) 之间的上第一永久 (U6) 的自发扭曲.
- 在成长期的患者中使用数字造来评估横向的dentoalveolar改变.
- 为了评估定在部扩张期间对落叶第二的影响.
主要方法:
- 一个双臂,并行分配,随机对照试验 (RCT) 涉及150名患有大横向缺陷的成长型患者.
- 随机分配给叶子扩展器®或RME,两者都在落叶的第二上.
- 主要结局:U6.6的自发扭曲. 二次结果:用数字件测量牙间宽度.
主要成果:
- 与RME组 (7.83°) 相比,Leaf Expander®组显示出明显更大的状扭曲 (12.66°).
- 在单边交叉咬伤子组 (p=.014) 中,观察到使用叶子扩展器® 的显著更大的扭曲.
- 发现扩张的程度和质旋转的程度之间存在显著的相关性.
结论:
- 部扩张在落叶的第二上,诱导显著的自发部扭曲.
- 叶子扩展器®在实现状扭曲方面比传统的RME更有效.
- 摩拉旋转的程度与叶落的第二摩拉层面实现的膨胀直接相关.
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