Upper midline deviation: Modified Hyrax expander

G. Farronato, L. Giannini, G. Galbiati, C. Maspero

Research output: Contribution to journalArticlepeer-review


Background The Hyrax rapid palatal expander is useful for patients in mixed dentition witht premature exfoliation of some deciduous teeth and maxillary hypoplasia. This appliance, which is provided of a vestibular arm for correcting maxillary asymmetric transverse discrepancies, represents an interceptive treatment able to reduce the duration of the orthodontic therapy with fixed appliances. Case report In this case report the modified version of the Hyrax rapid palatal expander is described. The activation method, the therapeutic benefits as well as the clinical advantages are described.

Original languageEnglish
Pages (from-to)174-176
Number of pages3
JournalEuropean Journal of Paediatric Dentistry
Issue number1
Publication statusPublished - 2014


  • Hyrax rapid palatal expander
  • Midline deviation
  • Orthodontic treatment

ASJC Scopus subject areas

  • Dentistry(all)
  • Pediatrics, Perinatology, and Child Health
  • Medicine(all)


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