Department of Human Sciences, Innovation and Territory, School of Dentistry, Post graduate of Orthodontics, University of Insubria, Como-Varese, Italy.
Eur J Paediatr Dent. 2021 Jun;22(2):125-128. doi: 10.23804/ejpd.2021.22.02.7.
The aim of this study was to evaluate maxillary arch changes in patients treated with Invisalign® First system in the mixed dentition, focusing on arch width, arch perimeter, arch depth, molar inclination and alveolar expansion.
A retrospective study was carried out. The sample consisted of 20 patients, 12 females and 8 males, treated with clear aligners for maxillary expansion. Arch widths, arch perimeter, arch depth and molar inclination were measured on pre-treatment and post-treatment digital dental models. Superimposition of digital models was performed to evaluate alveolar expansion.
There were significant increases in all measurements regarding arch width and arch perimeter, while arch depth and molar inclination significantly decreased. Alveolar expansion was recorded at all the reference points considered. Shapiro-Wilk test was used to check normal distribution. Average and standard deviations were calculated for all measurements. Paired t-test was run to report significant changes between T0 and T1. The statistical significance was set at p<0.05. Intraclass correlation coefficient was used to assess reliability.
In case of mild crowding or limited transverse maxillary deficiency, Invisalign® First clear aligners could be a reasonable alternative to traditional slow maxillary expanders.
本研究旨在评估替牙期接受 Invisalign® First 系统治疗的患者的上颌弓变化，重点关注弓宽、弓周长、弓深、磨牙倾斜和牙槽扩张。
进行了一项回顾性研究。该样本由 20 名患者组成，12 名女性和 8 名男性，接受透明牙套进行上颌扩张治疗。在治疗前和治疗后的数字牙科模型上测量了弓宽、弓周长、弓深和磨牙倾斜。通过数字模型叠加来评估牙槽扩张。
所有关于弓宽和弓周长的测量都有显著增加，而弓深和磨牙倾斜则显著减小。在所有考虑的参考点都记录了牙槽扩张。使用 Shapiro-Wilk 检验检查正态分布。计算了所有测量的平均值和标准差。进行配对 t 检验报告 T0 和 T1 之间的显著变化。统计学意义设定为 p<0.05。使用组内相关系数评估可靠性。
在轻度拥挤或有限的上颌横向不足的情况下，Invisalign® First 透明牙套可能是传统慢速上颌扩张器的合理替代方案。
Zotero 插件