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Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
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Maxillary expansion with clear aligners in the mixed dentition: A preliminary study with Invisalign® First system.

L Levrini1, A Carganico1, L Abbate1

  • 1Department of Human Sciences, Innovation and Territory, School of Dentistry, Post graduate of Orthodontics, University of Insubria, Como-Varese, Italy.

European Journal of Paediatric Dentistry
|July 9, 2021
PubMed
Summary

The Invisalign® First system effectively expanded the maxillary arch in children with mixed dentition, increasing arch width and perimeter while decreasing depth and molar inclination. This clear aligner therapy shows promise for mild crowding and transverse deficiencies.

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Area of Science:

  • Orthodontics
  • Pediatric Dentistry
  • Dental Technology

Background:

  • Maxillary arch development is crucial during mixed dentition.
  • Mild transverse discrepancies and crowding often require early intervention.
  • Clear aligner therapy offers an alternative to traditional orthodontics.

Purpose of the Study:

  • To assess maxillary arch changes using the Invisalign® First system.
  • To evaluate arch width, perimeter, depth, molar inclination, and alveolar expansion.
  • To determine the efficacy of clear aligners in mixed dentition.

Main Methods:

  • Retrospective study of 20 patients (12 female, 8 male).
  • Treatment with Invisalign® First clear aligners for maxillary expansion.
  • Digital dental models analyzed for arch dimensions and alveolar expansion.

Main Results:

  • Significant increases observed in arch width and perimeter.
  • Significant decreases noted in arch depth and molar inclination.
  • Alveolar expansion confirmed at all measured points.

Conclusions:

  • Invisalign® First system is a viable option for mild maxillary crowding.
  • Clear aligners can address limited transverse maxillary deficiency.
  • This system presents an alternative to traditional slow maxillary expanders.