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横向变化的稳定性与清晰的对齐器和hyrax扩展器从混合到永久牙

Andrew Tsai¹, Heeyeon Suh², Sandra Khong Tai³

¹Private Practice, Vancouver, British Columbia, Canada.

American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics

|March 5, 2026

概括

无论是Invisalign First (IFS) 还是hyrax扩展器,都提供了从混合牙到永久牙的稳定大门扩张. IFS还提供稳定的下弓扩张,有利于轻度拥挤.

科学领域:

矯正牙科矯正牙科是一種矯正牙科.
牙门发展牙门发展
儿科牙科儿科牙科

背景情况:

在用Invisalign First系统 (IFS) 和乳扩展器治疗的混合牙科患者中评估横向变化的纵向稳定性.
评估通过过渡到永久牙的门扩张的维持.

研究的目的:

为了确定在使用IFS和hyrax扩展器混合牙时实现的门扩张是否保持在永久牙中.
为了比较IFS,hyrax扩展器和未经处理的对照之间的横向变化的纵向稳定性.

主要方法:

在119名患者 (44名IFS,36名hyrax,39名对照) 的长度回顾研究中.
使用数字研究模型在三个时间点测量门宽度变化 (犬,前,第一).
使用ANOVA和线性混合效应模型分析了脑图子组的垂直骨变化.

主要成果:

与对照组 (0.4-1.2毫米) 相比,IFS和hyrax两组都显示出上门宽度显著增加 (IFS:1.8-2.8毫米;hyrax:2.2-3.7毫米).
杆菌的初始扩张比IFS更大,但复发率更高. IFS还实现了稳定的下弓扩张 (1.9-2.9毫米).
在任何组中都没有观察到任何显著的垂直骨变化.

结论:

在IFS和hyrax两种情况下,大门扩张在从混合牙过渡到永久牙的过程中是纵向稳定的.
IFS提供了稳定的下弓扩张,适合轻度拥挤或横向缺陷.
使用这些系统的治疗没有导致显著的长期垂直骨效应.

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