Maxillary expansion with clear aligners in the mixed dentition: A preliminary study with Invisalign® First system

Authors

  • L Levrini Department of Human Sciences, Innovation and Territory, School of Dentistry, Post graduate of Orthodontics, University of Insubria, Como-Varese
  • A Carganico Department of Human Sciences, Innovation and Territory, School of Dentistry, Post graduate of Orthodontics, University of Insubria, Como-Varese
  • L Abbate Department of Human Sciences, Innovation and Territory, School of Dentistry, Post graduate of Orthodontics, University of Insubria, Como-Varese

DOI:

https://doi.org/10.23804/ejpd.2021.22.02.7

Keywords:

Palatal expansion technique, Maxillary expansion, Clear aligner appliances, Mixed dentition

Abstract

AIM: 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. MATERIALS AND METHODS: 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. CONCLUSION: In case of mild crowding or limited transverse maxillary deficiency, Invisalign® First clear aligners could be a reasonable alternative to traditional slow maxillary expanders.