Université de Clermont Auvergne, CROC, 63000 Clermont-Ferrand, France; Service d'odontologie, CHU de Clermont-Ferrand, 63000 Clermont-Ferrand, France.
Private Practice, Abu Dhabi, United Arab Emirates.
Int Orthod. 2023 Jun;21(2):100750. doi: 10.1016/j.ortho.2023.100750. Epub 2023 Mar 27.
The main objective of this review is to assess the effectiveness and predictability of the transverse expansion movement performed by Invisalign®. The secondary objectives are to determine whether the expansion is of a dentoalveolar or skeletal nature, and to locate the areas of expansion on the dental arch.
Two investigators used the PubMed database to search for articles related to the subject. After using a research equation, specific inclusion and exclusion criteria were applied and the final selection of articles was done after being read in full. The ROBINS-I tool for non-randomized studies was applied to assess risk of bias in the results of each included study.
After reading the articles in full, 12 articles were included. Regarding effectiveness, most studies showed an increase in all measured interdental distances, with a maximum expansion at the premolar level. As for predictability, significant differences were found between post-treatment models and Clincheck® models, making it generally weak. Concerning the nature and areas of expansion, increase of arch width was due to buccal tipping of the crowns following a decreasing gradient from anterior to posterior.
Invisalign® treatment is effective in achieving a maxillary transverse expansion. However, this expansion is mainly dentoalveolar, with a facial crown tipping of the posterior teeth. Clincheck® software tends to overestimate the expansion movement when compared to the clinical outcome, therefore the predictability of movement is low.
本次综述的主要目的是评估 Invisalign® 进行的横向扩展运动的效果和可预测性。次要目的是确定扩展是牙牙槽还是骨骼性质，并确定牙弓上的扩展区域。
两名调查员使用 PubMed 数据库搜索与该主题相关的文章。使用研究方程后，应用了特定的纳入和排除标准，并在全文阅读后进行了最终的文章选择。非随机研究的 ROBINS-I 工具用于评估每个纳入研究结果的偏倚风险。
在全文阅读后，纳入了 12 篇文章。关于效果，大多数研究表明所有测量的牙间距离都增加了，在前磨牙水平的最大扩展。至于可预测性，治疗后模型和 Clincheck®模型之间存在显著差异，因此通常较弱。关于扩展的性质和区域，弓宽的增加是由于牙冠颊向倾斜，从前向后逐渐减小。
Invisalign® 治疗在实现上颌横向扩展方面是有效的。然而，这种扩展主要是牙牙槽的，后牙的颊向牙冠倾斜。Clincheck®软件在与临床结果相比时往往会高估扩展运动，因此运动的可预测性较低。
