与清晰对齐器相比,上弓扩张和自发的上第一扭曲与Ni-Ti叶弹和快速大扩展器:一个随机对照试验
Alessandro Ugolini1, Alessandro Bruni2, Andrea Abate3
1University of Genoa, Genoa, Italy.
概括
清晰对齐器和叶子扩展器实现了类似的上干扭曲,与扩展器结果相似. 这些发现提供了对横向大缺陷有效的正牙治疗方法的见解.
科学领域:
- 矯正牙科和牙弧部發展
- 大面部生长和发育.
背景情况:
- 横向大缺陷是儿童常见的疾病,需要 ортодонтической干预.
- 早期的混合牙是一个关键的窗口来解决大的生长和发育.
研究的目的:
- 为了比较清晰对齐器 (CA),叶子扩展器 (LE) 和快速大扩展器 (RME) 在实现上部第一 (U6) 扭曲和上部牙弧扩张方面的有效性.
- 在成长中的儿童中,将这些治疗方法定在第二个初级上时,评估这些治疗方法.
主要方法:
- 进行了一项优越性随机对照试验,其中60名儿童表现出横向大缺陷.
- 参与者被随机分配到CA,LE或RME组,以U6扭曲为主要结果.
- 其次性结局包括犬间,间和间初级杆宽度的变化.
主要成果:
- 与RME (6.22°) 相比,CA和LE都显示出明显更高的U6扭曲率 (分别为11.89°和11.73°).
- 在这三个组中,在整体上牙弧度扩张方面没有发现显著差异.
- 治疗持续时间各不相同,CA需要最长的平均治疗时间 (15个月).
结论:
- 清晰的对齐器和叶子扩展器提供了可比的dentoalveolar扩张,当到主要的牙.
- 叶子扩展器比快速大扩展器更容易实现更大的自发U6扭曲.
- 这些发现表明CA和LE是有效的替代方案,用于管理横向上腺缺陷与上腺纠正.
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